From IMDB on Strange Brew-
The role of Brewmeister Smith was written with Max von Sydow in mind. But Rick Moranisand Dave Thomas thought actually enlisting him would be impossible. It turns out that Freddie Fields, then-president of MGM had just produced Victory (1981), which starred von Sydow. So he sent the esteemed actor the script. Instead of hashing it out with Fields, von Sydow ran it by his son, who was a huge SCTV fan and encouraged his father to take the role.