I played Assassins Creed 1 a long time ago, but only got half way through it because it go too repetitive.
I recently watched the movie Prince of Persia: Sands of Time and it really motivated me to complete AC1, so I did (without doing many of the side missions) and I enjoyed it. Assassins Creed 2 is on my hit list to complete before the release of this game in November.
My current hit list is:
Assassins Creed 2
Bioshock
Bioshock 2
Hawx 2
Crysis: Warhead
Halo: Reach (xbox360 :( )
Upcoming games on hitlist
Borderlands DLC 4
Crysis 2 (Q1 2011)
Call of Duty: Black Ops
As you can see from all those titles I am a First person shooter guy, but I enjoy the assassins cred type games as well. I recently played Singularity which was pretty good. If you know any good storyline titles let me know