Out of what I saw, I enjoyed The Departed, Arrival, Lost in Translation, Sideways, Adaptation, and There Will Be Blood.
I've watched Sideways over and over and still love it. I've seen Lost in Translation a bunch of times, too, and find Bill Murray's performance very touching.
Never was a Tarantino fan--it's all shrill, like someone who understands the theatrical tricks in Shakespeare, but none of the content.
I liked The Royal Tenenbaums when it came out, but lost interest. It's very stylish, but a watered-down version of Salinger's Glass Family stories. I'm still in love with Rushmore, though.
The Dark Knight had some great performances, but the crappy dialogue, with its cod philosophy, got old. Batman Begins was better--less ambitious, but more fulfilling.
Where is Mulholland Drive???? Or Lord of the Rings? It had some bad dialogue and poor attempts at humor, but pulling that adaptation off was quite an achievement. I also enjoyed several Ty West movies, like House of the Devil and The Innkeepers. I've watched The Devil's Rejects by Rob Zombie a million times, too.
Also, they say screenplay, but most of us have no idea what these screenplays were like. Just the finished film. I enjoyed Inland Empire by David Lynch, which had no screenplay.