Bravo used to be the best channel on television. I remember them showing quite a bit of Kurosawa at the time too. Truffaut. Others. TCM has no competition for the crown now. Incidentally, they'll be showing Bergman's lovely Smiles of a Summer Night Friday night/Saturday morning at 2:00am.
I chicken out at list-making (at the exclusion of so many favorites); or at least I'd be forced to come up with silly sub-lists like "favorite American directors", "favorite silent directors", etc., to take the sting out of it. Rating intelligence is still murkier territory (though the conversation should include the names Jean Renoir, Roberto Rossellini, Stanley Kubrick, just for starters, as well as those mentioned), even casually, if only because it's such an amorphous quality in the artist, not least the filmmaker (a somewhat amorphous category in itself).
But this is an interesting thread, seeing who a few of the Welles fans like on the side. I never would have guessed Frankenheimer.