Kevin Smith v. Joel Siegel

Cardinal rule of movie-going: shut your fucking mouth while the movie’s playing.

Kevin Smith takes Joel Siegel to task for walking out midway through a screening of Clerks II. Smith manages to get Siegel on the phone, on the radio, and rips into him. (There's a link to an MP3, which is uncomfortable enough to make the whole hubbub a little bit interesting, at the bottom of the post linked above.) God only knows why Siegel stays on the line -- stammering out a half-hearted defense of his apparently noisy departure -- once it dawns on him exactly what's happening.