Peter Hornberger is a character played by Scott Adsit on 30 Rock.
Pete is a producer for TGS with Tracy Jordan. He works closely with head writer Liz Lemon he has known for 10 years.
Pete generally plays the straight man to the other characters, especially to Liz when she is temporarily pushed over the edge.
He seems to be the only competent person around.
Pete: So, first you thought he was illiterate and now you think he's lazy? Liz, you are racist.
Liz: No, Tracy took advantage of my white guilt, which is supposed to be used only for good, like over-tipping and supporting Barack Obama.
Liz: I hate going up to Donaghy's office even for something normal. I always feel like I'm entering the Death Star. I swear if Donaghy does this [does Darth Vader force strangle] at me, I'll run.
Pete: You'll be fine, Captain Needa.
Liz: No, Captain Needa dies. He dies!