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At tonight's Emmys, Billy Crystal spoke succinctly and movingly about his comedy peer and "the greatest friend you could ever imagine," Robin Williams. "It's very hard to talk about him in the past because he was so present in all of our lives," he said during his three-minute tribute, which preceded a short montage of Williams' television work.

All of it was poignant, but none more so than Crystal's final comment: "Robin Williams: What a concept." Indeed. We should all be so lucky to have that said about us when we're gone.