I think you should beat Mothership Zeta – it's not terribly long, and has a pretty cool conclusion. Then again, I'm the resident Vault Dweller here. After that I say ODST – it's only like 5 hours long from what I hear. I can't say I care for it though, as it's just a reskin of Halo 3.

My backlog as of this moment is Batman: Arkham Asylum and Borderlands, both on 360. While I have more unbeaten games, they're the only ones I've played in the last year or so. At the moment I'm enjoying Company of Heroes on my PC.

I'm not even going to touch this topic.  I have a bad habbit of not finishing games.  Not sure why. 

Once I get it on 360 you'll have a blast.  Promise.  :3

ALSO:  I've picked Project Sylpheed back up, which was high on my list since I bought it, played the tutorial, loved the hell out of it, then put it down for dinner or something and NEVER played it again until this last week or so.  I'm about halfway through it, and play a mission or two every few days.  And I gotta say I love it as much as the Tutorial made me hope I would.

Then there's Ghostbusters, which I'm playing back through instead of just picking up on the level I left off at since my 360 desided to delete all my scans and artifacts collected.  Just hit the Museum level yesterday and intend on playing through that tonight before I go to bed at least.