Charlie Sheen is back in rehab.
(And this time, I think it's totally going to work.)

His rep said, quote, "Charlie is most grateful to all who have expressed their concern. Mr. Sheen asks that his privacy be respected at this time and that no additional information will be provided."

There's no word where Charlie is.

His manager added, quote, "Charlie knows he has work to do and he is looking forward to regaining his sobriety.

"Charlie hopes to be back at work in the near future, but there is no time frame. Regaining his sobriety is what is most important."

As you probably guessed by that statement, production on "Two and a Half Men" is on hiatus until... whenever Charlie is ready to work again.

But Charlie's uncle, JOE ESTEVEZ, thinks production should continue on schedule... with HIM in Charlie's place.

Joe's manager sent a message to the show's bosses saying, quote, "Just a wild thought... How about a test episode of 'Two and a Half Men', where Joe comes to house-sit while Charlie is on 'vacation'. Your writers could have a ball with this."

He also said that Joe is, quote, "by far the funniest of the Sheen and Estevez clan."

(Joe is the younger brother of Charlie's dad, MARTIN SHEEN. His fine cinematic output includes "Beach Babes from Beyond", "Blood Slaves of the Vampire Wolf", "Motorcycle Cheerleading Mamas" and "Autopsy: A Love Story".)