>>92 (OP)
Depends on how little of movies you have watched. Those 100 best movie lists are shit if you watch movies a lot, but fine if you want to jump in for the first time. If you tend to have seen all of those movies, then you start going down by genre. Have you watched only movies made in the past 20 years? You should try those made in the 60s, or the 40s, or try a silent film.