Howard Stern’s sidekick Artie Lange did two surprise stand-up gigs at L.A.’s Comedy Cellar over the weekend. They were his first appearances since his very grisly suicide attempt last January. Lange, who received a standing ovation, didn’t directly reference the incident, but did make some jokes about being in a psych ward for the past eight months, as well as quitting heroin: “About a year ago, [I] was going through withdrawal from heroin, and [my] agent came up with the great idea. ‘Hey! You should start Twittering!’†Now that is a TV show. [Page Six/NYP]