In the Modern Era, Nolan, Wright, Guy Ritchie, and Abrahms. Say what you will, but I know that no matter what happens, I will not feel like I wasted money on a trip to the theatre for one of their films, at least for the spectacle alone. Of the batch, I like Ritchie the best, mostly due to what he gets out of his actors.
Francis Ford Coppola is probably the best all time director, though. Fucking amazing body of diverse work with tons of eclectic personalities involved. The documentary of the making of Apocalypse now is better than most films nowadays, actually, to say nothing of the actual movie.
My guilty pleasure of a choice is Nicholas Meyer, though. The dude single handedly resurrected the entire Start Trek franchise and his numerous works as a producer have had a far reaching effect in everything 80s Science Fiction and a lot of drama in that era too.