It should be noted that a film starring two bankable actors doesn't automatically qualify as a DSM. Here are a few qualifications that must be met: 1) The stars must be about equal in success and popularity. For instance, Lethal Weapon is not a DSM: people didn't say "Aw man, Mel Gibson and Danny Glover are making a movie together, I gotta see this!"; Gibson provided the star power here (in fact, this is the movie that made Glover a star). Similarly, Rush Hour wouldn't be considered this either: people didn't give a damn about seeing Jackie Chan and Chris Tucker going at it, they wanted to see Jackie Chan kick ass, and Tucker was along for the ride. This wasn't the case with the next two films though, where Jackie Chan was billed under Chris Tucker.