This week saw the debut of “The 50 Greatest Films,” with the One-Line Review’s Iain Stott compiling responses from 187 movie buffs, including me. The list made me wonder: Has the “film canon” become too ossified? I was frankly shocked that the results were so … ordinary. A top 10 of Citizen Kane, Vertigo, 2001, The Godfather, Casablanca, The Third Man, Taxi Driver, Seven Samurai, Psycho, and Dr. Strangelove is perfectly reasonable and respectable, but it’s also merely reasonable and respectable. Given Stott’s admirable democracy (“[I]gnoring thoughts of position or pedigree … ,” he wrote, “professionals and amateurs sit side by side”), I expected a tension between the canonical and the contemporary and the popular. Nope.