Literally one of my favorite PS3 games ever. I've played it more times than I can count.
Anyway, the graphics are beautiful, even today, the story is solid and immersive, and although the gameplay is your standard R&C fare, it's just as great as ever.
Ratchet's weapons are probably my favorite part of ToD though. They're so unique and varied, from the RYNO IV to the Alpha Cannon to the Sixaxis controlled Tempest Launcher. One of my all times favorites, though is the Groovitron. Man, I love that thing. The Shredder Claws are great too.
Definately a must own for any PS3 owner. Insomniac are really great people who make the most of the PS3's power and the effort put into ToD shows at every turn. Although I was hesitant to play it at first, thinking it was a kid's game, I'm so glad I did because it is not. Like I said, I've spent an embarrassing number of hours playing this game.
So, what more could you want in a game? It's funny, has a great story, fantastic characters, nice, stylized graphics, and boatloads of diffrerent gameplay mechanics.