I suppose. It's a nice place to be in, to be sure, but I think I'm pretty much set on Stanford. From all the checking in I've done, it seems like you're lucky if the Harvard profs give you the time of day, whereas the Stanford senior faculty are inviting you to wine tastings in Napa Valley. Pretty stark difference.
edit: With that said, anyone who is also trying to decide between Stanford and Harvard, PM me! We should compare notes -- there are some issues to think through.