As Alex Hitchens — a.k.a. the Date Doctor — in Hitch Will Smith helps sweet, clueless lotharios (like scene-stealer Kevin James) woo the women of their dreams (see Amber Valletta). Naturally, Hitch can't diagnose himself when he fumbles in the face of his own ideal beauty (Eva Mendes), and an inevitable misunderstanding threatens everyone's happiness. Fortunately, Smith's charm and James' heart keep things fresh. EXTRAS The blooper reel has your standard oops-I-forgot-my-line moments, and the deleted scenes are nothing you'd miss. Roughly as engaging are the featurettes on ''Hitch Style'' (precious moments devoted to how hot Smith looks) and Big Willie's entrée into the Guinness Book of World Records for ''the most appearances in 12 hours by a film star'' (only three). Completely intoxicating, however, is the eight-minute behind-the-scenes look at James' pizza-making, Q-tip-using dance sequence. Here's hoping the director's cut will one day feature his finest smooth moves, ''The Lighthouse'' and ''Slooow Thriller.'' B