In an interview Scott Bakula said in playing so many characters over the years, being the trapeze artist was the most difficult to do, since he is the catcher he had to spend a lot of time swinging upside down, which would be fine unless you have motion sickness, which Scott has, so not only was Scott scared to be up so high for the episode he was sick for most of it.
While Al was at the orphanage, he had a pet roach named Kevin. Also in this episode we find out that after he escaped from the orphanage, Al was in a circus for some time.
This is the only episode in the first two seasons of Quantum Leap where you don't actually see the person that Dr Sam Beckett leaps into (unless you count the reflection in the 'distorted mirror.'
Either Al's 2nd or 3rd wife was Hungarian, so he is able to understand Eva speaking Hungarian and knows of the European superstition that one bird in the house is unlucky but two is considered good luck.
Sam has been afraid of heights since he was 9 and his older brother Tom took him to see a Tarzan movie. While pretending to be Tarzan, Sam climbed up in the rafter of the family barn to tighten the swing rope and froze.