Agreed re. Hal Hartley (who is awesome) and Tim Burton (who is pretty overrated).
My ultimate favorites are probably Lynch, Hitchcock, and Truffaut. Also like Bergman, Kurosawa, Jarmusch, The Coens, Fellini, Mira Nair, Robert Altman, John Sayles, a lot (but not all) of Jonathan Demme, Ridley Scott, and Spike Lee. As for older films, I like Billy Wilder and Ernst Lubitsch quite a bit. Just started getting into Ealing comedies thanks to the FOT.
These are kind of obvious choices, but I love Casablanca and The Bicycle Thief but haven't seen any other movies by those directors.
My hate list is pretty predictable: Tarantino, Kevin Smith, Larry Clark, Oliver Stone, all that self-important 90s bullshit.
Somewhere in the middle: I like most Steven Spielberg, Blake Edwards, and Ivan Reitman movies. Godard I just haven't been able to get into, as I've mentioned before, but maybe it's just me. Not a Matthew Barney fan. I think Sam Mendes is pretty overrated - his stage and film work are both all about pretty pictures but are mostly sterile, boring, and two-dimensional. I've only ever seen Women Under The Influence and couldn't hear a damn thing, so I'm pretty neutral on Cassavettes.