Katherine Heigl: I've Seen Ashton Kutcher's O-Face

Who needs Grey's Anatomy when you're off shooting sex scenes with Demi Moore's husband?

Katherine Heigl has done the onscreen romantic thing in the movies with Gerard Butler in The Ugly Truth, James Marsden in 27 Dresses and on Grey's Anatomy with Jeffrey Dean Morgan and Justin Chambers.

Next, we'll be seeing her get it on with Ashton Kutcher in the upcoming comedy-action flick Killers. Ms. Heigl tells us it was everything we could imagine and then some…

"He is stupid hot," she says. "It's ridiculous. Even his hands are beautiful."

And he's apparently a pretty darn good kisser. "It's unbelievable," Heigl says of locking lips with Demi Moore's hubby. "Could you imagine if he sucked? I would have slapped him."

But things did get a bit uncomfortable for Heigl after she watched Kutcher in Spread, a recent indie flick in which he shows off plenty of his nakedness in many sex scenes with Anne Heche and a host of other women.

"He gave me the movie to watch," Heigl says. "I watched it one day during lunch, but when I went back to work, I was like, 'I don't know if I could look at you right now. I know you far too intimately and I'm really uncomfortable…I've seen your O-face!"

Don't forget, Ms. Heigl, we've seen yours, too. Vibrating underwear scene in The Ugly Truth, anyone?