Jeff at 2010-07-23 07:12:21:
I think if you're a fan of cinema, you're automatically a PT Anderson fan.
Without getting too personal, "Magnolia" caused a HUGE catharsis for my wife. We saw it in the earliest days of our marriage and the film brought out some terrible things from her past which, in turn, forced her to face them (in therapy, of course) and really move on with her life. So not only do I respect the craftsmanship on display there but I'm eternally grateful to film as well.
Like the Coens, it's really tough for me to zero in on my favorite film of his. PUNCH DRUNK LOVE is probably it, but SIDNEY (HARD EIGHT) is a close second.