After two years of playing Morrowind, modded 100%, I've (believe it or not) grown slightly bored, so I reinstalled Oblivion. Can anyone link me to some lists/recommend me some mods? I'm considering getting OOO again, but it's a such a big download and my computer is so slow these days... I can't remember much, is OOO worth the wait and bandwidth?

You need OOO or something like it. If you want a smaller download, TIE is pretty small.

My standard list of recommendations: (many of these require http://obse.silverlock.org/)
One or more overhauls: see http://www.gamesas.com/bgsforums/index.php?showtopic=820948 (OOO is good)
GUI: http://www.tesnexus.com/downloads/file.php?id=10763 or a reskin of Darn
Quests: http://www.lostspires.com, http://www.tesnexus.com/downloads/file.php?id=5156, http://www.tesnexus.com/downloads/file.php?id=16316, http://tesnexus.com/downloads/file.php?id=13714
magic: http://www.tesnexus.com/downloads/file.php?id=12466, http://tesnexus.com/downloads/file.php?id=22984, http://tesnexus.com/downloads/file.php?id=12049, and my own http://tesnexus.com/downloads/file.php?id=14750.
Performance: http://tesnexus.com/downloads/file.php?id=22410, and my own http://tesnexus.com/downloads/file.php?id=23208
Other: http://www.tesnexus.com/downloads/file.php?id=5296, http://tesnexus.com/downloads/file.php?id=2037, http://www.tesnexus.com/downloads/file.php?id=12859, http://www.tesnexus.com/downloads/file.php?id=12032, http://www.tesnexus.com/downloads/file.php?id=22282, http://www.tesnexus.com/downloads/file.php?id=4774, http://www.tesnexus.com/downloads/file.php?id=9333, http://www.tesnexus.com/downloads/file.php?id=10256, and my own http://tesnexus.com/downloads/file.php?id=22326.

Thanks, I'll be DLing and trying most of those. I also remember a manager for mods, which made them easier to install, can anyone give me a linky?

http://timeslip.chorrol.com/obmm_download.html
also Wrye Bash

Thanks again, kind stranger.

Anyone else have recommendations?

http://www.gamesas.com/bgsforums/index.php?showtopic=1010109

http://www.gamesas.com/bgsforums/index.php?showtopic=1072579&hl='

http://www.gamesas.com/bgsforums/index.php?s=&showtopic=1072579&view=findpost&p=15593416

There you go there's hundreds.... or at least dozens.

Hmm, azerbagb has a.... yep http://www.gamesas.com/bgsforums/index.php?showtopic=1040666&hl=azerbagb lists some mods that are small if your computer is very very slow.

LAME and RBP. Those will cover both magic being lame and useless(such as one can't get their hands on a frenzy level 50 spell in vanilla, or everything worth casting needs to be made by you, first), and brenton/the golem birthsign being over nine thousand times better then anything else in any way.
Plus, they are needed for Integration, one of the most interesting quest mods out there IMO, taking you back to the morrorwind style quests of talking to people, and what you say is important, instead of being able to commit social genocide and still being able to talk with the person who gave you that quest.
I've yet to go a huge amount of quests, but the ones I have done were very interesting/fun. I really like that there is even less hand-holding then just removing map markers, I have to stop and remember what people said quite often, because there isn't a journal entry that hits me with that magic 8-ball intervention I sometimes crave.

Popular mods include: (excluding quests)
Oscuro's Oblivion Overhaul and/or FCOM
Darnified / Dark Darn
Unofficial Oblivion Patch
Martigen's Monster Mod
Midas Magic
Deadly Reflex
Unique Landscapes
Tamriel Travellers / ???
Reneers Guard Overhaul
Toggleable Quantity Prompt
Harvest - Flora
Oblivion Stutter Remover
windom earls Oblivion Crash Prevent System
Fast Exit 2
RAEVWD
Better Cities, Open Cities, and/or Open Better Cities
LAME and/or Supreme Magicka
Super Hotkeys
QTP3R
Enhanced Economy
Streamline
Thieves Arsenal

Here a few of the mods I can't play without.

http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=3953 by Oscuro, dev_akm, MadCat221. Not just a 'creature-adding' mod, not just a 'difficulty' mod, not just a 'gameplay-tweaking' mod, Oscuro's Oblivion Overhaul is actually one of the finest finest roleplaying mods around. http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=1757 by Martigen, Corepc Dev_Akm Shadowborn is the perfect complement to Oscuro, adding much-needed spontaneity to Oscuro's static world. Crank Martigen's mod all the way up and Oblivion will feel as wonderfully unpredictable as an MMO. These mods are so inseparable to me I count them as one.

http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=2764 by, of course, DarN.
This essential mod goes a long way toward making Oblivion's consolized interface useable. Configurable from within the game via a menu.

http://www.tesnexus.com/downloads/file.php?id=14065 by tej?n, or http://www.tesnexus.com/downloads/file.php?id=13879 bu ABO.
Two excellent character-levelling mods that do away with stat management, excel spreadsheets, visits to Wiki pages, etc, to research "builds". With these mods a player can just play and let a mod handle leveling seamlessly and invisibly in the background. I tend to prefer RL but I am using nGCD in my current game and am very impressed.

http://www.tesnexus.com/downloads/file.php?id=14304 by tej?n.
This mod allows the player to control the speed of advancement of each skill. Easily configurable via an .ini.

http://www.tesnexus.com/downloads/file.php?id=11237 by tej?n. (I tell you, I believe my games would be practically unplayable without tej?n.)
Willpower again has an affect on the player's vulnerabilty to magic, as in previous ES games.

http://www.tesnexus.com/downloads/file.php?id=7484 by Deathless Aphrodite.
Makes the player lose fatigue when running. When the player's fatigue hits 0 he starts to walk. Also allows the player to sprint for a brief time.

http://www.tesnexus.com/downloads/file.php?id=25078 by TheNiceOne.
Using this mod merchants' gold goes up and down with each trade. Also does away with the haggle slider (what a relief!) Allows the player to specify how much gold they recive from looting containers, enemies, as quest rewards, etc. All configurable via .ini.

http://www.tesnexus.com/downloads/file.php?id=4387 by CorePC. Adds much-needed life to Cyrodiil's roads. The merchants are great if you like to spend extended time away from cities as I do.

http://www.tesnexus.com/downloads/file.php?id=16513 by Bananasplit, Wolfslady, Reckless, SilentResident, Nernie, Vorians and last but not least, Ismelda.
The way the cities of Tamriel should have looked. Spend hours wandering around like a tourist, awestruck at how different (and gorgeous) everything looks. Comes in modular form - you can choose to redo all of Cyrodiil's cities or just one. It's your choice.

But as a Morrowind player you might be more interested in Arthmoor's http://www.gamesas.com/bgsforums/index.php?showtopic=1019807, which tranfers the vanilla cities into the Cyrodiil worldspace. Wonderful for those of us who love to ride horses into town.

http://www.gamesas.com/bgsforums/index.php?showtopic=942911, also by Arthmoor, adds Morrwind-style transport to the game. A nicely immersive touch.

http://www.gamesas.com/bgsforums/index.php?showtopic=984109 by XMarksTheSpot, Brumbek & Ismelda is another mod I can't play without anymore. It adds windows that turn off and on in synch with day/night cycles and also, optionally, smoke from chimneys. Comes with a nice variety of window color tints too.

Emma has recently released one of her wonderful companion mods for Oblivion, http://www.tesnexus.com/downloads/file.php?id=28977, an Alchemist-oriented companion with a mind of her own (and, as a bonus, dialog voiced by Emma herself).

http://www.gamesas.com/bgsforums/index.php?showtopic=1073491 by onra. If you like to explore, this is the mod series for you. Replaces the 'placeholder' landscape of Valenwood and Elseweyre (and, soon, Summerset Isles) with fully-realized land, ready to be modded. Goes great with:

http://www.gamesas.com/bgsforums/index.php?showtopic=1072969 by Side777, which adds seven ships of varying sizes you can pilot around all this new coastline.

http://www.tesnexus.com/downloads/file.php?id=25023 by Iliana.
An ambitious project whose aim is to recreate the province of Elseweyr, home to Khajiits and, of course, Moon Sugar. Compatible with Tamriel Heightmaps.

My recommended list:

Unofficial Oblivion Patch
Unofficial Shivering Isles
Unofficial Official Mods Patch (if you are using (some or all) Official DLC Plugins)
OBSE
OBMM
Wrye Bash
COBL
All Natural
Enhanced Water
Enhanced Vegetation
Real Lava
Book Jacket Oblivion
Book Jacket DLC
FlyingCameraMod
A magicka Overhault (I use Supreme Magicka)
Spell Delete And Item Remove
Enhanced Economy
Map Marker Overhaul
Super Hotckeys (by Sky-Ranger1)
FastExit2 (by Sky-Ranger1)
Oblivion Stutter Remover (by Sky-Ranger1)
kuerteeCleanUp
Change Console Key (if you are using a Laptop)
A leveling System (I use Realistic Leveling)
Progress
Alchemy Advanced + Alchemy Extras
An Oblivion Overhaul (OOO + MMM the most popular and recommended)
Bodies Mods (HGEC for female, Robert Male most populars)

I have no specific recommendation for quests like The Lost Spires ... etc, you may end be happy with or not depending of you gameplay style.
But you can use this list to try and see some:
http://tesnexus.com/downloads/cat.php?id=35&page=1
(Organize: Downloads, Desc, Go)

Thanks, everyone! I've downloaded a lot of these, even the big ones like OOO. Should all be done by tomorrow morning.

I have three mods to add. They aren't "necessary," but they're three of my favorites!

First off is http://www.tesnexus.com/downloads/file.php?id=16308. It's my favorite house mod. There's so much to do, and it just looks great!

I also like http://www.tesnexus.com/downloads/file.php?id=4804 a lot. Each of my characters always has at least one sort of weapon from that mod.

Last but not least is the http://www.tesnexus.com/downloads/file.php?id=15294 by Kyoma. I find it very enjoyable to write books and journals in-game. It's a very well done mod.