Mel Brooks is to comedy what air is to mammals: Essential. With EGOT-winning credits dating back eight decades, there are gems a-plenty, but according to Brooks, none rank higher than his masterpiece, “Blazing Saddles.” “It’s the funniest movie, I think, by far. One to four should be ‘Blazing Saddles.’” (Warner Bros.) For those of you who haven’t seen the movie, shame on you.