All of the R&C games have been awesome. Since 2002, Insomniac have been churning out these games like there's no tomorrow, but the thing is, not one entry was a dissapointment. Here is my ranking of the games:

1. Ratchet & Clank - Up Your Arsenal :- This game took everything that was good about the first two games and added more awesomeness to the mix. The graphics were some of the best available when it came out, and the HD remastering on the PS3 looks beautiful too. There is also a lot of stuff brought back from the titles, to add an element of nostalgia to the game. Planets like Veldin, Aridia and Kerwan make a comeback, as well as weapons such as the Miniturret Glove and the Bouncer. This game is about as perfect as a game can get.

2. Ratchet and Clank :- This was my favourite game in the series for a number of years until I got them on the PS3 and was reminded of how awesome UYA was. This game was, quite simply, iconic. Iconic soundtrack (who can forget the Kerwan theme), iconic characters (besides from Ratchet and Clank, like Helga and Qwark), and the start to an iconic series. Ratchet was a dick in this game, though.

3. Ratchet and Clank Future - A Crack in Time :- TBC