Dave Grohl is filling in for Chelsea Handler this week on a string special Grammy-related episodes of Chelsea Lately, and last night the drummer, guitarist and documentary director led a roundtable of rapid-fire quips after the Planet Hollywood casino in Las Vegas passed over Britney Spears for a residency in favor of a hypnotist. "She just kinda seems dead inside, like there's nothing behind her eyes," joked Grohl. "Like there's nothing in her boobs anymore!"