Looks beautiful and plays great.
I've only played a few levels so far but the graphics are totally amazing and the game play is just hard enough to be challenging but no so hard that you give up in frustration.
The weapons are just as good and in fact because of the better graphics on the PS3 over the PS2 better than the PS2 R&C games which are my favorite games that I play on my PS2.
The story is really good and it keeps you moving along nicely. The background voiceovers are hysterical and add a lot of humor to the game.
The clank levels where he meets the Zoni give you a little bit of fore-shadowing of what's to come in Crack in Time and make some of his puzzles a nice challenge.
If you liked Ratchet and Clank on the PS2 and like me you are new to the PS3 I strongly recommend this series to you. If you never played any of the R&C games get this one as an introduction to the series and you won't be sorry. Especially if you like action / 3rd person Shooter / platform / puzzle solving games.