…she and hubby Jeff Richmond note she’s never talked publicly about a mystery slashing incident, which happened when she was 5. “It was in, like, the front yard of her house, and some body just came up, and she just thought somebody marked her with a pen,” Richmond says.

The “30 Rock” star has refused to discuss the scar. “It’s impossible to talk about it without somehow seemingly exploiting it,” she says. Says Richmond: “That scar was fascinating to me. This is somebody who, no matter what it was, has gone through something. And I think it really informs the way she thinks about her life.” Says Fey: “It’s really almost like I’m able to forget about it, until I was on-camera, and it became a thing of `Oh, I guess we should use this side’ or whatever. Everybody’s got a better side.”

Opening scene with Tina Fey as Sarah Palin…

Weekend Update with that Seth guy…