Citizen Kane is one of my favourite movies, and it's still very relevent today, it is def worth a full watch through.
Went to the cinema last week to see The Artist. Suprisingly, for an oscar winner, it was actually a good film! Using one man's situation as a metaphor for old media being replaced by the new, and how it can affect those left behind. Also it's mostly a silent movie, and plays with many of the themes and styles associated with them, and often frames shots in ways to homage old silent movies, film noirs etc, though the dog really steals the show.
EDIT: I always thought American Wearwolf was a pretty noticable comedy film, kinda lurking around the same level as the scream movies.