Kate Walsh, Jon Lovitz Kate Walsh, Jon Lovitz

Comedy Central certainly gets diversity points in assembling the lineup for Charlie Sheen's celebrity roast.

The cable network has added William Shatner, Jon Lovitz, Patrice O'Neal and Amy Schumer, as well as Kate Walsh (yes, Kate Walsh from Private Practice) and guitarist Slash.

Seth MacFarlane to emcee Charlie Sheen roast

They join previously announced guests Steve-O, Jeff Ross, Mike Tyson and roast master Seth MacFarlane.

So what exactly will Walsh and Slash, respectively, bring to the roast? Will Walsh come in character as a doctor to squash Sheen's "tiger blood" theory? Will Slash bring his guitar to provide some nice mood music, or to rip apart the Two and a Half Men theme song?

The Comedy Central Roast of Charlie Sheen will tape Sept. 10 and air on Monday, Sept. 19 at 10/9c.

Will you be tuning in?