Sheen makes full recovery?

Actor Charlie Sheen.

Charlie Sheen says he's not insane anymore.

Instead, these are good days for the Anger Management star, he declares, with his FX sitcom half-way through its initial 10-episode run and poised to get an order for 90 more.

Sheen told reporters Saturday that the prospect of continuing is as "exciting as hell," and added cheerily, "I don't think 90's gonna be enough."

With the expected pickup, FX plans to bring aboard Sheen's dad, Martin Sheen, as a recurring cast member. He will play the father of Charlie Goodson, the anger-management therapist played by Charlie Sheen. The veteran movie actor, who also played President Jed Bartlet on the drama series The West Wing, is guest-starring on an Anger Management episode that airs Aug. 16.

"I think that was the best episode we did," his son said.

Adding Sheen's father to the series "will give an extra dimension and make it a multigenerational family show," FX boss John Landgraf said in making the announcement.

Sheen arrived for his appearance at the Television Critics Association session clad in Bermuda shorts, a long-sleeve shirt, and loafers without socks.

He likened his tumultuous departure from Two and a Half Men and the stormy aftermath last year to a dream he couldn't wake up from. Or like "a train I couldn't get off of, except that I was the conductor," he added, speaking in quick bursts and fidgeting in his chair.

He said he learned a lot from that period, including "stick to what you know." Referring to his disastrous "My Violent Torpedo of Truth/Defeat is Not an Option" tour in spring, 2011, he got laughs from the group when he advised, "Don't go on the road with a one-man show in 21 cities without an act. "

"I'm not insane anymore," he summed up.