Nitrome are probably the best creators of flash games out there at the moment. Certainly the most prolific!
And I've spent far longer than I'm willing to share on their latest creation: Skywire VIP - which is simply a procession of celebrity-sprite lookalikes that are zip-lined onto a stage and you have to try and guess who they are supposed to be!
It's enormous fun somehow, I'm not quite sure how it stole a large portion of my evening, but there we go. Oh, and it has fantastic retro Genesis-like music too!
Click here to give it a go - See what it's like below (probably have to click for the larger version):