Lumines
Loco Roco
Sega Genesis Collection
Medal of Honor: Heroes (reallly short, but I liked it better than the last couple of console MOH games)
Capcom Classics Collections
Mega Man Powered Up
GTA: LCS (and I don't even like the GTA series that much)
Activision Hits Remixed
EA Replay (I bought this just for Mutant League Football)
Untold Legends: Brotherhood of the Blade (first UL I've ever played, decent diabloesqe rpg/hacknslash)
X-men Legends II (I just like it better on PSP)
With the exception of Loco Roco, Genesis Collection, and MOH: Heroes, all of these can be found for $20 or less (I bought Activision Hits and GTA at a "2 for $30" Circuit City sale)