I've seen the logs of Deep Blue's search algorithm, and you can too:
http://web.archive.org/web/20080418224511/http://www.research.ibm.com/deepblue/watch/html/game2.log
(a cleaner version: http://web.archive.org/web/20080625115940/http://www.research.ibm.com/deepblue/watch/html/game2clean.log )
Deep Blue didn't cheat, but Kasparov was justified in being pissed (although the allegations might have been out of line, in light of the fact that IBM had given Kasparov the logs within the day of the match).
Everyone knows about the Kasparov vs Deep Blue match 1997- but there seemed to be some amount of foul play involved from the IBM company... Some strange non computer like moves from the machine lead us to ask- was there a player behind Deep Blue, influencing it? Please watch this video and discuss!http://www.youtube.com/watch?v=cK0YOGJ58a0