Moon Unit Zappa
Dharma: "Our [doctor] treated the Zappa kids."
Kitty: "What are zappa kids?"
Dharma: "You know, Dweezil, Moon Unit..."
(Kitty looks blank.)
[From Dharma and Greg season two.]
So of course I had to look up Zappa's kids. Hark at this from Wikipedia:
Moon Unit Zappa (born September 28, 1967) is an American actress and musician. She goes by the name Moon Zappa; "Unit" is her middle name.
Zappa was born in New York City, the eldest child of Adelaide Gail Sloatman, who worked in business, and rock star Frank Zappa. She has three younger siblings, Dweezil, Ahmet, and Diva. Zappa's father was of Sicilian, Greek-Arab and French descent and her mother was of Danish, French, Irish and Portuguese ancestry.
... Man, you can't make stuff like that up!
By the way, how come it's always "actress and musician"? It's never "actress and novelist" or "actress and party organiser" or "actress and designer" or "actress and carpenter".
Update: Alex pointed out I was remiss for not including a picture of Jenna Elfman. I miss her, I hope she finds her way into some good shows or movies soon.