http://www.gamespyarcade.com/software/webgames/sicktwisted/fivefinger/fivefinger_index.htm pretty addicting game my personal best level: 9 score: 2140 EDIT: oh, and it's not really family friendly.
Not a very good game. I tried it once. I am not very good but for my first try, I didn't do bad. I loaded the page again and waited for the knife-wielding hand to do something. It kept getting faster. If the game was any better, it should have gotten faster only if I was good at it in order to challenge me. It was just moving faster without me doing anything. There's nothing exciting about a game that goes to "expert" mode on its own. *sigh*
First time I played it I scored 3520 with 241 safe stabs. Not really much to it, just hold down space bar and rack up points.