After an absence of 13 years, on March 18 (at 8 pm/ET) Saturday Night's Main Event returns to NBC with a two-hour special. The wrestlers who'll pretend to be beating one another to a pulp include Monday Night RAW's Triple H, Edge and Diva, and Friday Night Smackdown's Undertaker and Rey Mysterio. Hmm. Book Stacy Keibler, then we'll talk.