Well this is a real early heads-up on this game since it won't be out until Fall of 2011, but they just announced on the Playstation.blog that Insomniac just unveiled a new Ratchet & Clank title for the PS3 at the Gamescom event currently going on in Cologne, Germany - and it looks like fun.
The game is entitled Ratchet & Clank: All 4 One and offers an online coop adventure for up to 4 players. You can play as either Ratchet, Clank, Qwark, or Dr. Nefarious.
I've been a fan of Ratchet & Clank since I played Going Commando for the PS2. I actually bought that game for my nephew a few years back for Christmas but he had already received it from someone else so I ended up playing it myself and surprise surprise I really liked it.
If you've never played a Ratchet & Clank game you really should give this popular franchise a try. This is the first time the series has offered coop play like this and if I can convince 2 or 3 of you to get it too I'm all over it. Check out the trailer.