The Karate Kid

The song Miyagi drunkenly sings during the "celebration" of his anniversary is actually fragments of an authentic Japanese folk song that Pat Morita often heard as a child.

The last spin kick that Daniel is hit with before he is saved by Mr. Miyagi actually hit Ralph Macchio and hurt him.

Surprisingly, during filming in late 1983, Ralph Macchio was age 22. Some of the cast did not believe him when he was asked about his age.

The yellow classic automobile that Daniel polishes in the famous "wax-on/wax-off" training scene, then later offered by Mr. Miyagi as Daniel's birthday gift, was actually given to Ralph Macchio by the producer, and he still owns it.

According to Joe Esposito, "You're the Best" was originally written for Rocky III (1982) which explains the lyric "History repeats itself". The song had been rejected in favor of Survivor's "Eye of the Tiger".