Remember Press Your Luck? The one with the Whammies? I read a nifty article about that when I was looking up record breaking game show winners. (Did you know someone else has won more in Jeopardy than Ken Jennings?)
Anyway, the show had this big board with maybe 20 spaces around the outside that would light up momentarily for maybe 1/4 second before moving on to the next. I guess it looked random but apparently it followed a set pattern.
So some guy sat and home and watched it over and over again until he had the pattern memorized and managed to get on the show and won a crapload.
You can read about it in the Wiki entry under Michael Larson.
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100 pounds of shit in a 25 pound sack.