Oh boy, let's see...
Prince of Persia - Art style and animation, cool. Who-gives-a-fuck story and meh gameplay, not cool. That's just me though. I can understand why people like it, but it just ain't my thing. At least I tried a Prince of Persia game for once (yeah, sue me).
Splinter Cell: Double Agent - Awful, awful game. The PS3 version ran like a slideshow and I hated the gameplay. The multiplayer, however, was funtastic and ran smoothly. Nobody ever played it though.
The Orange Box - Hear me out first. All games included in this package would be great on PC. Except I happened to purchase it on PS3 because my computer isn't up to scratch, and what I received was a sloppy EA port. Frame rate was all over the place, frequent and long loading screens, and a quicksave system that somehow managed to annoy me were the main issues. Did I mention Team Fortress 2 servers were all abandoned? And Portal isn't that great.
/ranty ranty