I don't know about tears, as such, but the NOVA documentary about Watson included a video clip from the end of the famous Kasparov-Deep Blue game. It showed him angrily storming away from the table after being beaten; the way the video was cut, in combination with the narration, gave the impression that he was something of a sore loser. Note, however, that it was a very short clip, and there was probably a lot of context that didn't come through.