BuddyTV is about to meet the Mother of all TV shows. That's right, we're heading down to Los Angeles to visit the set of CBS' beloved sitcom How I Met Your Mother, and we're giving you the opportunity to submit questions for the cast.

This Friday, we'll be on the set talking to all five of the show's stars, plus guest star (and potential Mother) Sarah Chalke. Going into season 4, there are plenty of big questions left for How I Met Your Mother. What will happen with Barney and Robin? Will Stella accept Ted's proposal and is she the Mother? And of course, when can Barney expect his next slap from Marshall?
We'll try to get the answers to these questions and many more, so submit your questions for Josh Radnor, Jason Segel, Neil Patrick Harris, Cobie Smulders, Alyson Hannigan or Sarah Chalke in the Comments section below, and we'll choose some lucky BuddyTV user's questions for our exclusive video interviews.