Charlie Sheen has already said that he's ready for his Comedy Central Roast to skewer him in September, but instead of going all-out, there may be some topics that are off-limits. For example, his ex-wife, Brooke Mueller, whose drug-fueled exploits are common knowledge. Regarding the potential burns she might suffer when the show airs on Sept. 19, Mueller's camp told TMZ, "He better not go there." But "go there" is exactly what Sheen wants to do, and it frightens even Comedy Central execs, who said, "Charlie has assured us that nothing will be off limits in this Roast which scares even us." Turns out, Mueller may have a legal edge if Sheen takes a crack at her. In their divorce settlement, Sheen promised never to discuss her drug use publicly. In the meantime, Sheen is working on his super-secret TV deal, which he dropped hints about Tuesday to a TMZ paparazzo. He says he'll be working with Joe Roth, who produced Sheen-helmed movies such as Major League and Young Guns, along with Alice in Wonderland and others. Sheen says the show is based on one of Roth's films but wouldn't say which one. We think he'd make a fine Mad Hatter. TMZ did some digging and reports that the show will be based on the 2003 film Anger Management, which starred Adam Sandler and Jack Nicholoson. Sounds like something with which Sheen has experience.