Moon landing on 'Private Practice!'

We think Kate Walsh is a real beaut and all, but the real breakout in the Sept. 26 premiere of Private Practice is (drumroll, please) guest star Moon Unit Zappa. The genius behind the 1982 hit "Valley Girl" has a five-hanky moment in the latter part of the episode as a bereft mom. The gutwrenching scene also features series stars Amy Brenneman and Paul Adelstein. If you need a reason to check out the Grey's Anatomy's spinoff, Zappa is it.