She has been in several things, as well, but you probably know her best from the "I Love the '80s" on VH1 or random commercials. She's the cute one with blond hair and thick-rimmed black glasses. Kind of a blond Lisa Loeb, without the singing. She could be the voice of Karolyn Slowsky, too, but I'm working on that verification.
Actress: Rachael Harris
Monk episode: "Mr. Monk and the Secret Santa"
Commercial: Quaker Oats chocolate-covered rice cakes; possibly the voice of Karolyn Slowsky from the Comcast turtle commercials
Previous work: "Notes from the Underbelley" and "Evan Almighty"