Plaidophile

This is the most addictive platformer I've ever played. Holy cow. It's also pretty funny, and the voice acting is great, and the graphics are amazing (the only I you can really tell the difference between the realtime game engine and the FMVs is the FMVs have a lower framerate and a little bit of visible artifacting, though some of the lighting/fur/etc. effects are a bit better in the FMVs too). The difficulty level seems to be just right for me, and the storyline is pretty interesting even though I never got through the original Ratchet and Clank (and never played any of the sequels).

Some of the non-mainline gameplay bits are a bit fiddly and obnoxious (like, the Starfox-esque rails-shooter segments could be a bit better), but so far I'm very impressed with this game. I totally recommend getting it, and a PS3 to play it on if you don't already have one. (Which you probably don't.)