After he retired from boxing in 1981,a 29 year old Kallie Knoetze co-starred in a movie with Bud Spencer.
BOMBER(released in 1982).
he plays the villian Roscoe Dunn(for some reason cast as an American)
Although entertaining,you may want to click ahead to 1:27 if you want to see the big boxing sequence .
http://www.youtube.com/watch?v=wt7USpSWz-A
(I know this was a choreographed fight of course,but notice the style Knoetze uses in it,
he seems to be trying to copy Gerrie Coetzee's boxing style,instead of his own straight ahead Marciano-Foreman
slugger/brawler style,if Knoetze changed that style to this in the latter part of his boxing career,no wonder
he was losing those last professional fights).