More Tyson KOs in this clip
www.youtube.com/watch?v=YAR5r1RpwLQ&feature=related
the final is him being KO'd by Lewis
this longer clip includes "all 50" of his KOs and goes right back to footage of is amateur days where he was a lot lighter and faster and fighting in head gear.
www.youtube.com/watch?v=emhQwIlLiD4&feature=related
There is a lot of repetition, but it's worth watching to see his progression as a fighter over the years, one match at a time