Pros:
Looks incredible. From the awesome "fur shading" to the vibrant environments and lovingly rendered minute details, it's a visual feast.
Full of filthy goodness. Bluer then a frozen whal, the script is genuinely funny and populated by a top host of colourful characters.
One side is an enjoyable platformer which has stood the test of time well and makes a great transition over to Xbox....
....While the other houses an absoloutly awesome shooter that's right up there with the best of them. Fast, frantic and absoloutly mental
A huge focus on the multiplayer side of things will ensure this is still bing played through system link and live for years to come.
Cons:
None
Just a note for people, it has bots, a multi-player mission based campaign mode that can be played co-op splitscreen. So even if you don't have live there's a lot of options.