You think Wes Anderson is an obscure filmmaker? Haha, that's interesting.
He's far from obscure. He's one of the most accredited and accomplished film directors of all-time. He is one of the reasons for Luke and Owen Wilson's popularity. Not to mention the resurgence of Bill Murray's more serious acting career. Calling him obscure is an insult to him, and embarrassment for you.
As far as using film to gauge the intelligence level of a person, I find it to be pretty accurate. I have yet to meet an intelligent person that enjoyed the movie "Leonard Part 6".
On the other hand, people that enjoy films that actually make you think and comprehend have made for some pretty intellectual conversations.
Many people would disagree with your assessment that movie taste is connected to intelligence.
BTW, can you tell me how great of a movie "Crank 2" was? I bet you're a huge fan...