Charlie Sheen -- Back at 'Two and a Half Men'

11/2/2010 2:45 PM PDT
Charlie Sheen is back on the set of "Two and a Half Men," and a bigwig associated with the production says, "What's shocking is how normal everything is."

Charlie arrived at the Warner Bros. lot at 10 AM PT today, and when he showed up on the set there were "lots of fist pumps and hugs."  But we're told no one addressed his wild night in NYC last week, nor the divorce he filed against wife Brooke Mueller yesterday. 

Charlie just began rehearsing and on the surface it looked like an ordinary day.