Paul Rudd, the Buddy Movie and the 'Bromance'

Jason Segel (left) and Paul Rudd (right) getting a rush at a Rush concert in "I Love You, Man."

While watching (and hugely enjoying) "I Love You, Man," the Paul Rudd comedy opening Friday, I wondered: Is there a difference between the  "buddy movie" (like "The Odd Couple" or "Easy Rider") and the  "bromance," (brotherly romance, i.e. the platonic friendships between men seen in films such as "Superbad," "Pineapple Express" and "ILY,M")?

Is the "buddy movie" a picture where a joint objective ais the text and the friendship subtext and a "bromance" the reverse? And how/where do we categorize the Bob Hope/Bing Crosby, Jerry Lewis/Dean Martin, Walter Matthau/Jack Lemmon , Cheech and Chong comedies?

Are you looking forward to "I Love You, Man"? Are you a Rudd fan? Like most women and an immodest number of men, he's made me laugh since he played Alicia Silverstone's grunge stepbrother in "Clueless." What makes him so funny is that he's an ordinary-looking guy who apparently is possessed by comic pixies, for instance his performance in "Knocked Up" as the married man who simultaneously tries to escape his marriage and make it work.