I believe there's a few people in this thread who have quite a few left though!
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Bashiok - Blizzard Representative - 08/01/2011 -"So how many skill combinations are there now? Well taking into account 6 active skills, all the rune combinations, and 3 passives we currently expect each class to have roughly 2,285,814,795,264 different build combinations."
"Hey, I thought you'd like the witty irony of grub-on-glowie violence!"