NEW YORK — There are the traditional ways that bands announce their comeback, and then there's the Van Halen way, in which you take over a hole-in-the-wall New York City club, cram it with every music writer in the biz (and some celebs, too) and practically burn the place to the ground with a hit-packed 70-minute set. Oh, and just to ensure maximum good times, you pick up the bar tab, too. For everybody.