This episode had everything! George O'Hanlon would become George Jetson & the woman looking @ the apartment (Madge Blake) would be known as Aunt Harriet on Batman!
Seeing Little Ricky getting his wish to meet Superman was nice for his birthday party. But when Ricky couldn't budge the piano, Little Ricky said to let Superman do it, which he does!
What topped this episode was when that Superman learned that Ricky's been married to Lucy for 15 years, he quips, "And they call me Superman!"