Great thread by the by. Good for finding lots of gems to enhance the game. I've picked up a few from this thread already that have been awesome, http://www.tesnexus.com/downloads/file.php?id=17254, http://www.tesnexus.com/downloads/file.php?id=3974, and http://www.tesnexus.com/downloads/file.php?id=23680. Just to note about me before I make my recommendations, I'm really picky about my mods. If they're not up to a high quality level then they don't make the cut. Some folks can play with little inconsistencies in their game but not me. So without further ado...
Weapons:http://www.tesnexus.com/downloads/file.php?id=11467
It's a dwarven mace. It rotates! It's got menu icons and it's unenchanted so you can enchant it if you want. Pretty nifty.
http://www.tesnexus.com/downloads/file.php?id=5088
"What? You gonna hit me with that fissshh." It's a fish club. It's not lore friendly. It's not in the lore at all. Ha! It is a neat little item that I don't think many folks have tried. If you have http://www.tesnexus.com/downloads/file.php?id=10223 installed (an awesome mod by the way) you will find the fish club in a very appropriate place.
http://tesnexus.com/downloads/file.php?id=5414
Although this has been downloaded a few times, It doesn't seem to get that much fanfare. This mod adds some excellently made weapons and armour. available for purchase at the "Slash & Smash"
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=4211
Obviously these do not fit in the lore but these are very well made and with a bit of imagination they should compliment your game just fine.
Quests:http://www.tesnexus.com/downloads/file.php?id=17718
This is a well put together smaller quest that is a bit overlooked.
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=3454
A slight quest. A good set of armour (Albeit a bit overpowered). All in all, very nice.
http://www.tesnexus.com/downloads/file.php?id=8823
A neat little quest and building with a ghoulish reward.
Items:http://www.tesnexus.com/downloads/file.php?id=15250
This mod doesn't add much. Just a little bit more quality to the game.
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=5153
Basically they are mark and recall objects. The items are very well made and they work perfectly.
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=5354
Adds some lucky dice into the game.
These two mods both add enhancements to the book "The Lusty Argonian Maid", to up the naughty factor.

oo:
http://www.tesnexus.com/downloads/file.php?id=20085
http://www.tesnexus.com/downloads/file.php?id=6671
http://www.tesnexus.com/downloads/file.php?id=22795
Ever thought those ruins looked a little barren of stuff? This mod adds some Ayleid knick knacks throughout the game.
http://www.tesnexus.com/downloads/file.php?id=12510
Not quite in tune with the setting but not to far off either. This mod adds harpsichords that will play some songs to various locations throughout the world. Now you can rock out while having a pint, 18th century styles.
Interface:http://www.tesnexus.com/downloads/file.php?id=4061
Adds much better descriptions for your skills as you level up.
http://www.tesnexus.com/downloads/file.php?id=18285
A great set of coloured icons for your map. Hardly downloaded at all. They are my personal favorite and I find they go best with.....
- http://www.tesnexus.com/downloads/file.php?id=1950 - for Cyrodiil
- http://www.tesnexus.com/downloads/file.php?id=12797 - for The Shivering Isles
Gameplay:http://www.tesnexus.com/downloads/file.php?id=5534
Can't see that cool amulet cause it's hidden under your armour? This mod fixes that. Allows you to see the amulet you're wearing outside most armours.
http://www.tesnexus.com/downloads/file.php?id=19994
Instead of having to load a bunch of esp's this mod has all of the http://www.tesnexus.com/downloads/file.php?id=9969's and all of the http://www.tesnexus.com/downloads/file.php?id=11474 esp's merged into ONE! With the esp's in separate form I couldn't get Oblivion to start. This unsung hero fixed all that. Grrrrreeeeaaat.
Environment:http://www.tesnexus.com/downloads/file.php?id=19038
Anyone that hasn't got this mod should get it. It adds sooo much to the ambient sounds of Cyrodiil. I'm not sure how much of an underdog it is but get it anyways. Do it!
http://www.tesnexus.com/downloads/file.php?id=20698
Ever seen your grass go wonky? Is it all criss-crossed and stuff? It's Alive waters that's doing it. Now, you don't want to ditch a great mod like http://www.tesnexus.com/downloads/file.php?id=6914, so download this mod and it should fix (usually, apparently not for some) the problem.
http://www.tesnexus.com/downloads/file.php?id=14783
Makes the Niben an actual river that flows to Topal Bay, instead of just a long a lake. Silly Bethesda.
Armour:http://www.tesnexus.com/downloads/file.php?id=7106
A retailer in the mountains that sells armour for all your burly barbarian needs.
http://www.tesnexus.com/downloads/file.php?id=11075
An excellent helmet which is earnable and has a unique role in the game. Note: it must be loaded after Kvatch Aftermath or http://www.tesnexus.com/downloads/file.php?id=15412 if you use one of these mods (I use Kvatch Rebuilt).
http://www.tesnexus.com/downloads/file.php?id=16255
A very well made set of armour and a weapon that is appropriately placed in Cyrodiil
Buildings & World-spaces:http://www.tesnexus.com/downloads/file.php?id=17229
This adds a beautiful and tranquil new world-space that is accessible from Cyrodiil. I Highly recommend it.
http://www.tesnexus.com/downloads/file.php?id=14939
A pleasant tropical island that requires a wee bit of work to get there. Good stuff.
http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=4513
This mod adds coffee shops and stands throughout Cyrodiil. Not exactly in keeping with the Cyrodiil setting but I don't care, It's a great mod. With a bit of imagination it fits the world just fine. Sidenote: Check out some of Jannix Quinn's http://planetelderscrolls.gamespy.com/View.php?view=User.EntriesListing&id=39135. He's prolific.
http://www.tesnexus.com/downloads/file.php?id=9478
Wonder how it is exactly that door at the waterfront gets you magically all the way up to the imperial city? Wonder no more. This mod adds a tunnel between the two locations. There are other versions of this mod but this one is simple, to the point and works right so this is the one I use.
http://www.tesnexus.com/downloads/file.php?id=15648
This mod makes the Anvil harbour a lot more like an active harbour. It's adds in some yappy seagulls too. Bonus!
Presented here are Lemunde's player homes. They are all dimensional homes except for one that's under water! I think these may be the biggest underdog mods on my list. They're all fantastic and they've hardly been touched. These are very well made homes in varied settings. They've all got these magnetic display things that I've never seen anywhere else. They are integrated into the game well, you won't easily acquire them. Download them all. Seriously, you won't be disappointed.
- http://www.tesnexus.com/downloads/file.php?id=12599
- http://www.tesnexus.com/downloads/file.php?id=19324
- http://www.tesnexus.com/downloads/file.php?id=14074
- http://www.tesnexus.com/downloads/file.php?id=16285
- http://www.tesnexus.com/downloads/file.php?id=16853
- http://www.tesnexus.com/downloads/file.php?id=14368
http://www.tesnexus.com/downloads/file.php?id=9392
This mod opens the road through Skingrad so you can walk or ride right on through.
So there you have it. That's my underdog list for now, sorry about the long post. Feel free to give them a try. In my humble opinion they are all well worth it.
To the Authors of the mods: Thanks for your great work. I wouldn't know where to start on making this stuff. The fact you guys can create all these great mods is just awesome. Kudos and keep em coming :rock: