Along Came Polly has a place in a tiny niche of the romantic comedy genre that one might call ''Poopy Love.'' You know these movies; they feature a nerdy guy, usually played by Ben Stiller, whose love interest witnesses him in the throes of some scatological or penile trauma yet falls in love with him anyway. The comedy throughout must be gross and, whenever possible, breast, pee-pee or sphincter-related. The girl is usually a childhood friend (à la There's Something About Mary) who's grown up
