Prey. A very weird game at times, but also quite innovative with vehicle sections, portals, warped gravity and so on. The random arcade machines scattered throughout levels is a nice touch.
Duke Nukem Forever. The gaming press gleefully tore into this at launch, and I was expecting it to be completely unplayable - and actually I think my expectations were set so low that I couldn't help but be pleasantly surprised a lot of the time. The sheer linearity of the whole thing is disappointing but it's worth playing through once just for the spectacle, and the incredibly meta head-scratching marvel that this decade-spanning behemoth ever escaped from development Hell.
Homefront. Yet another "Surprisingly un-shit" game, I was expecting a brainless CoD clone but the actual game is a solid offering in its own right rather than being an inferior imitation. The story is campy near-future grimdark militarism and some of the set pieces and world building are genuinely quite poignant. Then again, there are some very schlocky moments and the whole thing plays a bit like a Tom Clancey novel with the dialogue cut out and just the action sequences shown... and for a starving, ragtag bunch of freedom fighters, the protagonist and co seem a hell of a lot better armed and organised than the North Korean occupiers for the most part. Ho hum.
Serious Sam 3. First and Second encounter were phenomenal (although they haven't aged well, as I recently found out), the sequel was an abomination best forgotten about, and Sam 3 is a weird one. Some very odd decisions went into the design of this game, including the decision to ramp up the action so excrutiatingly slowly that for the first two thirds of the game it feels like a poor fan-made Second Encounter mod. When the action FINALLY arrives it comes close to being half the adrenaline rush First/Second encounter were. Overall a poor game but Sam fans should play it, if just in the hopes that the series will return to its roots in future installments.