GOAT is reserved for Pulp Fiction...
To be honest.
It is still his best film.
Although it was drastically altered, I still think writing the script for True Romance is the best thing Tarantino has done in his career. Possibly my favourite movie of all time, in spite of it's complete lack of substance. The Sicilian scene resides at the pinnacle of all cinema achievement in my books.
After seeing multiple movies in my film class and discussing them, I think overall my favorite films top out at Taxi Driver, Pulp Fiction (Watched on my own time, loved it) and Punch Drunk Love, in terms of meaning, depth and acting. Overall entertainment and my personal top films would be around Kick-Ass (excited for the sequel), Push (the one about the super powers, not the one about the poor chick), and Strange Wilderness
My all-time favourite film is Network.
Other than that...
I am more of a foreign film type of guy.
Among my favorites are:
Jules Et Jim
Once Upon a Time in America
The Burmese Harp
Masculin - Feminin