What to Watch

and not to watch:

Jonathan Silverman will play one of three adult siblings who rally to support their eccentric professor father in the new CBS comedy (still untitled).

Darren Ritchie has landed the male lead opposite Tiffani Thiessen in another untitled comedy pilot for CBS, which centers on a young New York couple adjusting to life as new parents. Who is Darren Ritchie?

Melinda McGraw has landed a lead role on ABC's "Neighbors," which revolves around dueling neighbors (Lenny Clarke, Brian Benben) who have to contend with one another when their wives (Ann Cusack, McGraw) and kids become friends. McGraw recently co-starred on CBS' short-lived "Center of the Universe" and has a multiepisode arc on ABC's "Desperate Housewives."

Geoff Pierson has joined NBC's "All In," which stars Janeane Garofalo as a single mother of three in Las Vegas who earns a living as a professional poker player. Pierson, who plays President John Keller on Fox's "24," will play the main character's father. Interesting. I can't see Janeane with kids.

Kurt Fuller has come aboard ABC's "Joint Custody." The comedy stars Nick D'Agosto as a recent college graduate who returns home and find his parents (Marilu Henner, Fuller) divorced.

Martin Mull, whose numerous TV credits include "The Ellen Show," "Sabrina, the Teenage Witch," "Fernwood 2Nite" and "Mary Hartman, Mary Hartman," has been cast in NBC's "Thick and Thin," which centers on a former fat woman (Jessica Capshaw) who struggles with her new image. Who doesn't love Martin Mull? Why don't they mention "Roseanne?"

Jenna Elfman will have the lead role in CBS' comedy pilot "Everything I Know About Men."

John Leguizamo will play a sports agent in CBS' untitled Diamond-Weisman drama pilot about working parents juggling domestic responsibilities.