This song was used in the 1999 movie South Park: Bigger Longer and Uncut while Shiela Brofloski is explaining to the parents that the kids' language is far out of order. After watching the Canadian movie Terrance and Phillip: Asses of Fire, which contained lots of flatulence and coarse language, the kids started using dirty words. Shiela told them to Blame Canada, as that is the only explanation for the horrendous behavior of the children. The song and movie make a point that adults can be really stupid, and will often assign blame to whatever is convenient.
This song was performed at the Academy Awards by Robin Williams.
Suggestion credit: Michael - Tucson, AZ, for above 2
"Blame Canada" was nominated for an Oscar, but lost to Phil Collins' "You'll Be In My Heart" from the movie Tarzan. The South Parkers took aim at Collins, portraying him on a subsequent South Park episode holding his Oscar the entire time and being very disagreeable.