David Arquette Checks Out of Rehab

Nearly one month after entering himself into a rehab facility to treat problems with "alcohol and other issues," David Arquette has checked himself out.

Arquette completed his treatment on Sunday. "He has competed his treatment and has left," his rep tells PEOPLE. Another source told PEOPLE that Arquette is "in great spirits. He's feeling good and he's ready to move forward."

Arquette had checked into rehab at the beginning of January. The actor moved into a live-in rehab facility to address an alcohol problem following a New Year's Eve party at Arquette & Beacher's Madhouse Theater, located at the Roosevelt Hotel in Los Angeles. According to its website, the venue features a "Flying Midget bartender" and had the "atmosphere of a circus."

A source close to Arquette told TMZ at the time that he was seeking help because it was "the right thing to do for his family." PEOPLE quoted another insider who confirms the star entered rehab for "drinking and depression, not hard drugs."

Courteney Cox came out in support of her estranged husband after his decision. "I really admire David and his choice to take charge and better his life," the actress told PEOPLE earlier this month. "I love and support him."

Arquette checked himself into an unidentified facility over the holiday weekend following months of erratic behavior that included several revealing conversations with friend and shock jock Howard Stern. Many of the revelations to Stern included intimate details of his love life -- or lack of a love life -- with Cox.

Charlie Sheen Checks In to Rehab

Charlie Sheen voluntarily checked himself in to an undisclosed rehab facility earlier today ... and his show "Two and a Half Men" has been placed on indefinite "hiatus" while he undergoes treatment.

"Two and a Half Men" producers released a statement saying, "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."

The statement continues, "We are profoundly concerned for his health and well-being, and support his decision."

Sheen's publicist tells us, "He is most grateful to all who have expressed their concern."

As TMZ previously reported, Sheen had a briefcase of cocaine delivered to his mansion during a 36-hour bender earlier this week ... and was hospitalized early Thursday morning for a hiatal hernia.

Jon Cryer Checks Internet Daily for Charlie Sheen Gossip

Actor Jon Cryer joked about the situation looming around "Two and a Half Men" co-star Charlie Sheen, calling his stories "unbelievable." He told Conan O'Brien on Wednesday's episode of "Conan" that he goes on rumor patrol every morning "to know if I have to go to work at all."

Jon woke up to news a few months back that Charlie's car had been driven off a cliff. He thought, "Sure hope Charlie's okay." The co-stars reunited that day on set and Jon admitted to Conan, "[I was] checking for scratches because my mind had come up with this whole thing that he had crashed the car and then clawed his way back up the cliff."

The actor has learned to expect the unexpected from Charlie. "Normally you would not believe that from somebody," he said of Charlie's car being stolen and driven off a cliff. "But from Charlie Sheen, you believe that because that happened to him…twice."

"Conan" airs weeknights on TBS.