Jon Cryer NOT mentioned in the imdb credits.
Jon Cryer reprises his role of the coke bottle glasses wearing Washout but he is not mentioned in the credits. I can see why the producers may want to leave his name off (as an unexpected cameo) but imdb usually catches this. It is especially mind boggling in light of the popularity of Sheen and Cryer's TV series "Two and a Half Men".
The Lord giveth and the wife taketh away!