Actor Charlie Sheen reckons he’s a good guy.

Today he pleaded not guilty in Colorado to domestic violence charges stemming from a Christmas Day incident with his wife.

Sheen entered his plea Monday to counts of menacing, criminal mischief and assault. A trial is scheduled July 21.

The star of "Two and a Half Men" on CBS is accused of putting a knife to the throat of Brooke Mueller Sheen while they vacationed in Aspen.

The maximum penalty for the most serious charge of menacing is one to three years in prison.