So Bill Murray is no Bostonian, but he is one of Bostonist's favorite people. Perhaps it's his midwestern comedic sense or his part-ownership of the local Brockton Rox baseball team, but Murray is one of the few actors/comedians that is worth staying up to watch on Letterman. On last week's appearance, Murray was completely smitten over his new girlfriend, Katie Holmes; Letterman unfortunately had to break the news about Tom Cruise. Murray has a......