14th Birthday party ideas?!

I'm 14 and having a birthday party tomorrow but I don't know what I should do. There will be 10 of us (all male). There's nothing on in the cinema that doesn't look crap that I haven't seen (except for Scott Pilgrim but I'm gonna see that once I read all the comics). When we were younger I would have a water fight but I don't really think people would be into that anymore. My Xbox has the 3 red rings so we can't play that. There's probably going to be a sleep over aswell and I can have 6 of the people for it (although if i have more than 3 or 4 I'll get a headache). I was thinking we could just rent a few movies and watch them but I'm worried that if it's a loose plan like that that one of them will say "I don't want to watch a movie" (I'm actually thinking of one of my friends in particular).
So, anything fun that you guys can think of? Do you think they might enjoy a water fight? Do you think if 1 or 2 people out of the 10 object to watching a movie that I should say "Sit down and shut the **** up"? What are your views and give ideas from parties you've been to that you enjoyed