Just completed Black Op on veteran the other day, now only a few things left to do for that platinum trophy, then i can clear my gaming scheduled for GT5.
My first Fallout 3 playthrough, I clocked up around 95 hours of play, and that was without any of the DLC installed. My second playthrough, with all the DLC installed is still running, and at last save was about 160 hours. I still have Mothership Zeta and Operation: Anchorage to finish, plus a bunch of unmarked quests and undiscovered locations to complete.
I loved mothership zeta, i would love to see a Fallout set in space with spaceships, aliens, alien planets and weapons....would be fun...well for me anyway.