WATCH LIVE: Judd Apatow on MTV PIONEER Series, Today at 4 PM EST

Judd Apatown is MTV PIONEER's next speaker: he will sit down with MTV News' Josh Horowitz today, Wednesday (December 19) at 4 p.m. ET for a 60-minute discussion that will touch on many things: his new movie, "This Is 40," his success in Hollywood, how the "Apatow effect" has changed the way studios make and market R-rated comedies, and everything he's learned along the way. You can watch the interview live in the player below!

To take part in the chat, which streams live on MTV.com, fans can tweet questions to @MTVNews using the hashtag #askjudd.

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