I have a feeling I'll like Lars and the Real Girl when it finally crosses my field of vision. Sounds charming to me. Teeth less so, but I'll give it a whirl if I get the chance.
Colin, being afraid of having your penis bitten off by a vagina is at best irrational, and if you're afraid of having it bitten off by something else, with the proper precautions, I think you'll be okay. Don't fret too much.