If you love baseball, get MLB The Show 09.
Other Games:
Uncharted [Wait for a price drop, soon to be Greatest Hits]
Metal Gear Solid 4
Little Big Planet
Killzone 2
Call of Duty 4
Ratchet and Clank
Valkyria Chronicles [Best JRPG/SRPG this gen]
Wait for a good deal for a PS3. Most retailers have been having deals by selling a PS3 with a free $50 gift card. Best Buy, Wal mart, Target all had them, but they don't have any deals this week.