For the eighth consecutive year, holiday moviegoers will be subjected to actor Robin Williams, whose Patch Adams hits theaters nationwide Dec. 25. The new film keeps alive the year-end Williams-infliction streak that began with 1991's Hook and includes such heartwarming family fare as Flubber, Jumanji, Mrs. Doubtfire and Aladdin. It is not yet known whether Williams plays a doctor or a professor this time. 