Fable 2 and Fallout 3 expansions

[TRios_Zen]

Once you reach level 20 in Fallout 3, you'll want to get the Broken Steel DLC; if you don't, any experience you earn will be wasted (Broken Steel unlocks the level cap from 20 to 30).

That being said, I'd probably skip Operation Anchorage and only get The Pitt and Broken Steel, if I had to do it all again.