I wish I could claim credit for finding this gem, but I haven’t even seen this movie (I hear it’s very funny, though). The font shown in the airport sign is the old Macintosh system font Chicago. Historically speaking, it’s possible, but an extremely unlikely font choice for a major airport, even one located in Chicago. Matt Soar spotted this and wrote about it on his blog. He also has written about typographical oddities in HBO’s Deadwood and the movie Paycheck. Good eye, Matt! (Update: Matt Soar seems to have deleted those entries from his blog.)