It’s Ira Glass’ birthday today. Facebook, Twitter, MySpace and our intranet told us. Happy Birthday from all of us at WBEZ! Here’s an outtake from TAL on Showtime. Sometimes, This American Life is interrupted…by well, American life. or of course, Ira and friends (Sagal, Helfrich, McDonnell, OK GO) on the famed dance show “Chic-a-go-go” (hint, they are the back-up band)…