Am I too conservative to think that, albeit one may be unlucky in love and subsequently had a few partners on the way, 20 lovers is not something to jump up and down with joy for? Regardless of the moral dilemma, the jokes are not particularly funny and if it was not the only thing playing on the plane, I would not chose to watch it.
Anna Faris is always an entertaining presence, but the films that surround her are often the opposite. WHAT'S YOUR NUMBER is a painfully overlong tale of a girl who reads that women who sleep with over 20 men rarely get married, a milestone she has just hit, and decides to go back through them to find the man for her. Predictable and insipid, has little to recommend other than Faris herself.
Anna Faris' comic talent makes this both entertaining and charming, elevating a cliched story that doesn't do much to the worn-out romantic comedy genre. Chris Evans looks great naked, and that's pretty much it. Go Faris! And please someone; give her a really good script next time!