RE5 is the latest one i've completed. Just bought Quake4, a cheapy to keep me going, as it's a slow time for good releases. Also playing SF4 with the tournament edition arcade stick which is amazing.
Waiting for COD MW2, Bioshock2, Batman Arkham Asylum, Tekken6, Max Payne3 and Forza3, so need to save for later in the year!
My top 5 games so far are COD4, Bioshock, Forza2, Deadspace, StreetFighter4 in that order.