The antics of Charlie Sheen are no longer a laughing matter.

Days after yet another drug-fueled party that resulted in a trip to the hospital, the actor has checked into an undisclosed rehab facility.

As a result, production on Two and a Half Men has been placed on hold until its main star is healthy enough to work again. Wrote the network in a statement:

"Due to Charlie Sheen’s decision to enter a rehabilitation center, CBS, Warner Bros. Television and executive producer Chuck Lorre are placing Two and a Half Men on production hiatus. We are profoundly concerned for his health and well-being, and support his decision."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.