I am actually excited about this Halo thing.
I am also super excited about Resident Evil 4 coming to the 360 (and PS3) later this year. Meanwhile, other than BioShock Infinite (well over a year away), there really aren't any new games that have me excited. It is kind of weird I am looking forward to old games that I could actually play right now being re released in HD and with achievements. I just can't think of the last time anything mild blowing or truly unique has come out to make me look forward to new games; everything on the horizon is more or less more of the same.
The last several releases I have been really anxious for have been sequels that really were not that different than the ones before them. BioShock 2, Fallout New Vegas, Black Ops, Portal 2, Lego Star Wars III. The new Elder Scrolls looks impressive, but I am anticipating bugs and long load times.