Originally Posted by Libertine

That's not a chick flick, actually.

The Devil Wears Prada = chick flick
My Best Friend's Girl = not a chick flick
Confessions of a Shopaholic = chick flick
Knocked Up = not a chick flick
My Best Friend's Wedding = chick flick
40 Year Old Virgin = not a chick flick
He's Just Not That Into You = chick flick
I Love You, Man = not a chick flick
Bridget Jones' Diary = chick flick
Zack and Miri Make a Porno = not a chick flick
The Wedding Date = chick flick
Swingers = not a chick flick
The Proposal = chick flick
Wedding Crashers = not a chick flick
27 Dresses = chick flick
Employee of the Month = not a chick flick
Bride Wars = chick flick
Role Models = not a chick flick

Rule of thumb for distinguishing the two from eachother: If the lead character is a guy you wouldn't mind drinking some beers with, it's not a chick flick. If the lead character is a chick you'd want to strangle or a douche you'd like to punch in the nuts (Matthew McConaughey), it's a chick flick.

Avoid films featuring:
Sandra Bullock
Meg Ryan
Matthew McConaughey
Anne Hathaway
Kate Hudson
Jennifer Aniston
Renee Zellweger

Safe to watch:
Jason Segel
Seth Rogen
Vince Vaughn
Paul Rudd
Dane Cook