Because you like Aldous Snow in Get Him to the Greek

A laid-back stoner, Ben Stone wasn't planning on life's ultimate responsibility. See them in Knocked Up.

Kumar Patel is always high, always hungry for sliders. See them in Harold & Kumar Go To White Castle.

Alien insists on taking the party with him wherever he goes. And if you're lucky, you'll get to see his gun collection. See them in Spring Breakers.

Community-driven but practical, Calvin Palmer is a natural leader even if he doesn't always see it. See them in Barbershop.

Barry Egan has too many anger issues to list here. See them in Punch Drunk Love.

Steve Stifler is more than just a dude with a hot mom. He's also rude, profane, and obnoxious. See them in American Pie.

David Wooderson has clocked in hundreds of hours cruising around town looking for fun. See them in Dazed and Confused.

Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.

Amy Townsend rarely wakes up in the same bed twice. See them in Trainwreck.

While Alan Garner is loyal to his new friends, his efforts to help them often do more harm than good. See them in The Hangover.

Teddy Sanders loves his frat brothers so much he might never leave school. See them in Neighbors.

Sarah Ashburn lives life by the book and has trouble getting along with anyone who doesn't do the same. See them in The Heat.