Well. I went back trying to find the original post about this girl, but I can't seem to find it. Anyway, I was looking around at the tvshowsondvd site and I found out a little tidbit about Liberty Williams AKA Marilyn, the girl who broke Chico's heart. She was originally cast to play Tabitha in the series following BeWitched, but was later replaced with Lisa Hartman. Her pilot though will be included on the DVD coming out June 21. (What a coincidence, huh?!;))
Here's the link to read about what else she did.:D Taibtha (http://www.tvshowsondvd.com/newsitem.cfm?NewsID=3246)

Chico and the man is coming out June 21st!? YIPPPPEEEE!!

sorry about that i misunderstood it's the tabitha show that's coming out on DVD sorry to get your hopes up.

Is that the Lisa Hartman who went on to fame in many other roles, and married country singer Clint Black?

yes it is the same one, she also played a recurring almost duel role on Knots landing.
She played aspiring singer Cigi Dunn and when she was killed off she came back on later as a look alike maid in a hotel Gary Ewing stayed at, her name then was Kathy Gearry it was a cool story line.

OK thanx, I kinda figured it was but the picture on the DVD box didn't look entirely like her.