Either the Blue Bayou or the Tiki Room. The reason I like Disneyland (as opposed to other theme parks) is because it has a unique ability to transport you to completely different places/eras. The Blue Bayou and the Tiki Room do this the best, imho.
My favorite has to be NOS, specifically walking along the Rivers of America starting from POTC and ending at the Tom Sawyer rafts. That section has the most beautiful 360 view. No matter where you're looking, either out at the island, across the river, or back in to NOS, you are given a pure picture of everything that is Disney.