Sheen will appear on the April 12th episode of “Drew Carey’s Improv-A-Ganza.” The performance is billed as “an impromptu appearance” because that’s what Sheen does nowadays. He’s become the ultimate walk-on. He’s done “Kimmel Live” and now this. Soon he’ll sneak up behind Bill Hader on “SNL” while he’s imitating the star. Hader will act really surprised. Then they will kiss on the mouth. Then awkwardly avoid one another at the wrap party.

What’s most interesting is that Sheen taped this appearance in Las Vegas about a week or so before the meltdown that got him fired from “Two and a Half Men.” You may be over Sheen and flag this as non-news but I think it’s worth checking out. The chance of seeing a coked-up Sheen play Zip Zap Zop is too intriguing to pass up.

Other performers featured on the show are Ryan Stiles, Colin Mochrie, and Greg Proops, all regular performers on Carey’s “Whose Line Is It Anyway?” Incidentally, that phrase gets bandied about Sheen’s Sober Valley Lodge at least sixteen times a day. (Deadline)