Ian Lygo
Appearance
Ian Lygo currently holds the record for the most consecutive appearances on a television game show, specifically the game show 100%. After 75 shows, Lygo was asked by the show's producers to step down as an undefeated champion, due to worry over the game's ratings.
Lygo also holds the record for the highest individual show score -- not counting special shows -- on 100%. His score was 87%.