Watching “Hall Pass” (a funny-yet-disposable 2011 R-rated comedy about two suburban dads who get a week “off” from being married), it struck me how many movies target Generation X. For such a small and perennially shit-upon demographic, this age cohort has dominated a particular genre of comedy for going on 30 years. You start with the “Sixteen Candles” and “Ferris Bueller’s Day Off” bunch. Take a few years off, characters get older, and “There’s Something About Mary,” then “Wedding Crashers,” etc. They are basically comedies, but have both a gross-out aspect and a romantic aspect (and have gotten increasingly edgier).