Got all the add-ons for FO3, and imo there all worth the M$ points I paid
Broken Steel allows you to carry on the "main" story, which is a bloody good idea, seein as I missed loads of stuff after I finished the game! Operation Anchorage is another good add-on. Makes a nice change from the Wasteland, and it explains some of the back story
The Pitt is amazing...loads of good weapons, and armour to collect. My fave weapon is the auto axe
nothin beats slicing up a Super Mutant!! Point lookout is also good...again, loads of cool stuff to collect, new enemies to test you, but, dont try goin there at low level...I did @ level 12 and I got pwnd!!
My fave add-on by far is Mothership Zeta! As the last bit of dlc for FO3, its amazing!!
The aliens are funny, and the alien weapons are epic!
Could've been abit longer, but its still excellent!!