As a big fan of Entourage on the HBO cable network, I always saw something oddly familiar about Kevin Connolly (aka Eric "E" Murphy -- Vincent Chase's manager):
I knew Connolly from his earlier work in unpopular shows and movies (Rocky V, Unhappily Ever After among others) but that wasn't why the guy looked so damned familiar, like I saw him more regularly than just on TV...
Maybe it's just me? Maybe if I had a more candid shot of Mr. St. Louis you could see the similarities.
Oh well... just a thought.