and-a-Half Men” don't have to fret about subtracting Charlie Sheen from TV's top-rated comedy series. Sheen has agreed to a new contract that will keep him on the show for two more seasons, spokesman Stan Rosenfield said Monday evening after the deal was reached. “To put a fitting end on the 2 1/2 months of whirlwind speculation, I'm looking forward to returning to my CBS home on Monday nights,” Sheen, 44, said in a statement, adding his thanks to CBS Corp. Chief Executive Leslie Moonves for his support. Uncertainty had clouded Sheen's future with the series after he told friends that he wanted to leave after seven years because he'd tired of its production demands and wanted to focus on movies. Subsequent reports said that he was holding out for a payday of up to $2 million per episode. AP __