M.L.
Leave him in his room for quiet time. Give him a puzzle or books, turn on calming music.
lots of expert advice here from Dr. Sears:
http://www.askdrsears.com/faq/sl11.asp
Sometimes, I lay with my 2 year old on the couch and turn on a boring cartoon. We get cuddly stuffed bears and his blanket and have a mini naptime. Then, once he's resting, I sneak off and do dishes and such.