Question: I got such a kick out of seeing Britney Spears on How I Met Your Mother this week, but what got me most excited was Sarah Chalke's character, Stella, making a comment about leaving a St. Patty's Day party early. Could this mean she's the mother?! After all, Scrubs is coming to a close next season.

Answer: I think it's fair to say that producers are keeping all of their options open. And thanks to the show's Brit-induced ratings bump last week, it looks like they'll have a little more time to make that decision. I'm hearing a fourth season is looking wait for it, wait for it very good.