It's not clear whether Ashton Kutcher will demand the star power that Charlie Sheen did on "Two and a Half Men." But CBS is putting money that he will at least come close.

Kutcher returns to scripted television for the first time since his Fox series "That '70s Show" to take on a yet unnamed character on "Two and a Half Men" when it returns next season.

Kutcher was selected following Hugh Grant's decision not to replace Sheen. Kutcher is expected to bring a much younger audience to "Two and a Half Men," although that's not always the audience CBS has pushed for.

Production on the series stopped last spring when Sheen decided to blast both CBS and series creator Chuck Lorre, leading to his firing. Sheen later sued CBS for $100 million in a lawsuit that's still pending.

In 16 episodes this season, "Two and a Half Men" averaged an 8.6 rating/13 share, according to Fast National overnight ratings from The Nielsen Co. It was down nearly 5 percent from its previous year's audience, but was still strong enough to finish sixth in the ratings race as television's best-rated comedy (through April).

How did Kutcher reveal his new role to his more than 1 million Twitter followers? By simply asking what the square root of 6.25 was. The answer, before you reach for that calculator, is 2.5.

Since the end of "That '70s Show," Kutcher spent time hosting the MTV series "Punk'd" before making a big turn toward movies. Recent films involving him are "No Strings Attached," "Killers," "Valentin's Day" and "Personal Effects."