Rodney Dangerfield must be counted among the more remarkable figures in contemporary comedy. His standup career predates that of his old friend Lenny Bruce yet the peak of his success in films coincided with the rowdy, adolescent hijinks favored by "Saturday Night Live" alumni in the post-"Animal House" era. By all rights, Dangerfield should be a comedy dinosaur but his greatest hits are barely a decade old and he has continued to matter in the 90s through the turn of the century. As the founder and owner of the NYC comedy club Dangerfields and the host of a series of cable comedy specials,