Question: I saw Matthew Perry on an episode of The West Wing, and I was just wondering which episode it was. — Jessi, Clinton, Ind.

Televisionary: I can't say for sure which one you saw since he'd already played lawyer Joe Quincy in two episodes, last season's "Life on Mars" and "Evidence of Things Not Seen," by the time I got your question. And he made it three with Nov. 12's "Separation of Powers."