You should expand this a little
Meh, looked kinda cool, but this is not something that I would wanna play twice. Actually it's something that you'll play for about 30 seconds and then you never play it again. Ow well, it was pretty cool anyways.
You could add some extra things to make it a bit more interesting. You could add some Backstreet Boys backgroundmusic for example, this needed some music. You could also add some kind of menu-screen for every backstreet boy. In that menu, you can choose if you want to use a shotgun on him, use a flamethrower on him, blow him up, punch him, kick him, stab him etc. That'll make the game a lot cooler. Also, it would be nice if you added N'Sync and 98 degrees as well and maybe even more famous people like Bush etc. That'll make the game even more fun.
Anyway, overall I'd give this 6 out of 10. Like I already said, lot of fun to play it once, but twice is a little boring. You should expand it a little with more options etc. Well good luck with any future projects I'd say.