Point Lookout and Mothership Zeta.
http://uk.ps3.ign.com/articles/990/990080p1.html
http://uk.xboxlive.ign.com/articles/983/983990p1.html

http://www.youtube.com/watch?v=nirmblvcPHc

Point Lookout is the fourth downloadable content pack, and takes place in Point Lookout State Park in Maryland. Unlike other areas in Fallout, no bombs were dropped on Point Lookout. Humanity has left it behind and it is now described as a large swamp wasteland. Developers state that unlike the previous content packs, Point Lookout will have a fully explorable wasteland. Point Lookout is scheduled for a June 23rd 2009 release for the Xbox and PC versions and will be released for the PS3 after the original three packs have been released.

Mothership Zeta is the fifth downloadable content pack, and follows the main character after being abducted by aliens when going to explore a mysterious radio transmission from the Alien Crash Site. It will take place entirely on an alien spacecraft. It is set for a late July 2009 release for the Xbox and PC versions and will be released for the PlayStation 3 after the first four packs have been released (presumably 4–6 weeks after the release of Point Lookout).

The Hole is the sixth downloadable content pack, and follows the main character chasing a rabbit down a hole, where he meets a bunch of odd characters, and much search for the queen to finally find his way back home.

Huh, odd and by the looks of it REALLY REALLY ****ING DARK.

I still haven't reached level 30, I'm at 28. It'd be nice to have some quests to do again.

I still need to reinstall it.