Marciano vs Ali fight (always thought Marciano looked so fat in this)
http://www.youtube.com/watch?feature=endscreen&v=7XKcGRREcaM&NR=1
Oscar De La Hoya fights Shaq
http://www.youtube.com/watch?v=pywTVxJ8COI
I could not fight video of Ali vs Lyle Alzado (I've never seen it, but would like to)
Takada vs Trevor Berbick
Add yours
Butterbean vs Larry Holmes
Butterbean vs Bart Gunn in "Brawl for All" (The final of WWF's shoot fight series where wrestlers fought in 'sort of' MMA. I believe Shamrock and Severn were in this as well. This is the final)
Tyson sparring match vs Corey Sanders
Cotto wrestling with Kurt Pelligrino:
Chuck Wepner vs Andre the Giant
. 