I got this for the PC a couple days back, and I'm loving it - it's got all the ingredients I would have used if I was going to make the ultimate game.
It's the only game besides football games which I've actually been able to play for more than 5 minutes.
A bit repetitive, but then again, i spend 5 hours just cruising through the city smashing every single infected zombie on my way, so it's bound to get a bit repetitive.
Some of the unlockable powers are kick-ass as well; surfing on a bloody body before finally kicking it 50 feet at another zombie... How is that not cool?
Looking forward to Zero Pronctuation's review of it, though he might slate it, having just played InFamous. Then again, it's very Spiderman'esque; a game which he loved.
Some people prefer InFamous, other love Prototype for it's gameplay.