The sixth season of Dancing with the Stars premiered on March 17, 2008; the first results show was a double-elimination episode airing on March 25, 2008. The show followed the format of previous seasons, with 12 couples. On May 6, 2008 DWTS had a special two-hour edition to commemorate its 100th episode. The most frequently-given score for this season was 29, which was awarded 9 times to leaders in several weeks. Kristi Yamaguchi and her partner, Mark Ballas, won the competition. Kristi & Mark combined for four of the five perfect scores given out this season; she received three of them for her three Finals dances, giving her a perfect 90 out of 90. This season, along with the previous season, season 14 and season 15 are the only ones without a score under 15 or without a score under 5 given from any judge.