The poster of Beck above Marshall's bed which his father ridicules by saying Beck "looks like Barbara Mandrel" was originally intended to be a poster of Moby, and the joke would have been "He looks like a fetus." When the producers approached Moby to get clearance he took offense to the joke and refused to allow his image to be used.
The magazine Ron is reading in the opening scene is Maxim Magazine (May 2001) which featured Eliza Dushku on the front cover.