| Until May 7, 2002, the last living horse to win the Triple Crown (the Kentucky Derby, Preakness and Belmont stakes). Owned by Mickey Taylor and trained by Billy Turner, the thoroughbred raced from 1976-1978, winning the Triple Crown in 1977. (Affirmed was the last horse to win the Triple Crown, doing it the next year) He died on the 25th anniversary of his victory in the Kentucky Derby at Churchhill Downs.
Slew won 14 of 17 starts during his career, and won in excess of $1.2M in purses.
In his retirement, Seattle Slew reportedly commanded over $200M in sire fees. Slew's offspring include 102 stakes winners, who have won purses totalling over $75M.
Although it's open to debate, a friend of mine, upon hearing the news of Slew's death, remarked that he had always been her Platonic ideal of the horse.
Some information adapted from: CNNSI.com | 
