I have to say that was one of the funniest moments I've ever seen on a big stage where a Head Of State was involved. Putin just pocketed the Ring and walked off the stage, Kraft went pale-faced and dumbfounded, looked around for somebody to help him and realized he was in Moscow and couldn't do a dang thing about it.
One of the other funniest (but not so funny), was seeing George W. Bush cheer along with Putin the annual May Day parade from the Kremlin balcony. Kind of disgusting to watch, actually. The President of the USA, cheering the parade of Russian military might from the Kremlin balcony.