I can only buy two dlcs and I need help deciding

Personally? The Pitt and Point lookout

Broken Steel to raise level cap/keep playing after Main Quest.

The Pitt if you want a great story with difficult decisions. Point Lookout if you want a new, open landmass with plenty of content.

If possible, I'd get all 3. They're fairly equal, IMO.

I know I am getting Broken steel. What is the plot behind it? And how is mothership zeta?

Wrong forum? Should be here: http://www.gamesas.com/forum/33-fallout-3-general-discussion/
And Point Lookout and The Pitt.

Im sorry, Im used to posting in the new vegas forum

Now as to The Pitt and Point Lookout.
They have the best stories, art design and atmosphere of the DLC's.
I also think they have the most items if that's your interest.

alright so.... the pitt , anchorage , lookout , orr GRA for new vegas?

You ain't go GRA yet?
Nah, save it for later, go Pitt and Lookout.
Lookout is probably the longest of the DLC and the most free one.
Pitt has the best atmosphere and art design out of all of them.
The arena and steelyard are also awesome areas in it.

GRA just has weapons, Pitt and PL has new story, art and location.

Cant wait for the game of the year edition to turn up on my doorstep

I have Anchorage, MZ and Point lookout,

Anchorage. Is a good playthrough although there is no freedom to it, you get great items at the end.

Mothership Zeta is really fun, quite hard. Get the best weapons from it I reckon.

Point Lookout however is by far the best. In every way.

Pitt and Point Lookout.

The rest are terrible.

Operation Anchroge becauae you get the best armor at the end and power armor training, Point lookout though its sooo amazing the story is like its own game. The area to explore is amazing unlike the rest of the dlcs you can come and go as you please. The swampfolk are funny, cool and just plain creepy. Its sooo awsome! The Pitt is nice due to the fact the weapons you get are really good. Mz is okay but its easy to miss stuff while playing it. Broken Steel is really nice as well, the fact you can play forever makes it amazing. Also fighting the Enclave never gets old

Broken Steel for sure. Get that and Point Lookout if you are going for content. MZ has some cool stuff in it, like a Katana or a unique .44, but not much else cept for energy weapons. OA is just a break from regular gameplay, but has some of the best gear available. The Pitt has some cool gear too as well as a scavenger hunt. I like scavenger hunts.

The Pitt is by far the best DLC. I would pick Broken Steel only to increase your level cap and add more perks. Nuka Chemist is a great perk if you like to make Nuka Grenades. I would get Point Lookout after. Also if you are on console, don't install PL until you beat the Pitt. Theres some bad glitches with both installed. Like falling through a roof to your death, that sort of thing. You won't be able to obtain the best Assault Rifle in FO3 with this glitch in the way.

The Pitt definitely tells the best story out of the 5. Has a lot of feel behind the tragedy. Point Lookout would definitely be a close second, mostly because it has the biggest map size of the 5 and just the whole merky enviroment of Point Lookout.

Mothership Zeta was a fun adventure and really gives you some unique weapons when exploring the whole ship.

Broken Steel raises Level Cap to 30 and you'll also experience one of the most intriguing/hyped battles in video game history. Brotherhood of Steel vs The Enclave.

And Operation:Anchorage is a neat DLC, bringing you back to a time in history where the U.S. takes on China in "The Great War", just before the bombs fell. Great for war-based lovers.

i like them all but one does hit home for me...PITTSBURGH PITTSBURGH
also there is the Gary23 glitch but thats patched

When did the Gary glitch get patched. I am currently 1.7etc and I have used the glitch.

broken steel: lvl cap raised and can contune from end of story, New power armor and guns

Pitt: good story, based off of mad max thunderdome, good guns infiltrator and new power armor

point lookout: ehh ok story new land and open place to explore, Great guns backwater rifle and new clothing

operation Anchorage: great story if you want back storie, New power armor, and new Gauss rifle, and + their is the gary glitch

and last but not least mothership zeata: ehh ok story (most people hated this dlc cuz its mostly run n' shoot) new guns captn alien blaster and new armor winterized Combat medic armor