Trivia: In the show, there's a running gag of Charlie being obsessed with the waitress and her constantly rejecting him. In real life Charlie (Charlie Day) and the waitress (Mary Elizabeth Ellis) are married. They married in 2006, although they were dating before the show started.
As Charlie enters the bar Dennis is writing a sign that says: "Carmine's A Place for Steaks." A shot later and the sign is unfinished, with the words, "Carmine's A Place..." The words "for Steaks" are not on the sign.