We’ve been enjoying The Big Bang Theory for two main reasons: one, it features a Houstonian and alum of our favorite local (and sadly defunct) theater company; and two, it’s doing a fine job with actual geek humor and personality types.

What we didn’t realize is that the names of the main characters — Sheldon and Leonard — are a tribute to a film and television producer, director, writer, and actor who, among other things, played Nick the bartender in It’s A Wonderful Life.