This is a rare episode where Elaine doesn't share a scene or talk to either George or Kramer.
When Jerry, George, Susan, and Hallie go down to the Santos Brothers' dressing room, the brother who answers the door says that two of his brothers had left already, and we then see that there were only two more brothers inside the dressing room. That makes a total of five brothers. However, when they were performing on stage, there were only four brothers.
When Kramer tells Jerry that he dozed off, Jerry says it's no wonder, because he'd only slept an hour and twenty minutes in the past three days. However, according to the pattern Kramer was trying to copy (20 minutes every 3 hours), he'd have slept an hour and twenty minutes after only twelve hours. In three days he would have slept six hours.
Kramer's math regarding the da Vinci sleep pattern is completely wrong. He claims that by sleeping "20 minutes every 3 hours," he gains "2.5 extra days per week."
20 minutes every three hours works out to 160 minutes (2:40) per day. If we assume that he is comparing the da Vinci sleep against the normal 8-hours-per-night sleep pattern, he gains 5:20 per day. Weekly, he gains 37:20, which is only 1 day, 13 hours, and 20 minutes. In order to gain the extra 2.5 days that he claims, he would have to currently be sleeping 11:14 each day.
Kramer also claims that by living to age 80, he will have lived the equivalent of 105 years. Michael Richards was born 07/24/1949, which makes him 46.625 years old on the air date of this episode, 03/07/1996. Age 80 is 33.375 years away.
By gaining 37:20 per week, Kramer gains 80 days, 21 hours, and 20 minutes per year. Therefore, after passing the 33.375 years, he would have gained 2699.7 days, which is only 7.39 years. Therefore he would only have been the equivalent of 87.39 years.
But, let's suppose that Kramer is sleeping more than 11 hours each day as he claims, and that his initial calculations are correct. If he gains 2.5 days per week, then he gains 130 days per year. After the 33.375 years, he would have gained 4338.8 days, or just 11.9 years. He would only be the equivalent of 91.9 years old.
When George asks Jerry if he thinks Hallie is the "it" girl, he says she has it all: she's intelligent, she's smart...aren't intelligent and smart technically the same thing? Not a very smart, or intelligent, remark by George.
Jerry: Hey, look! It's David Steinberg!
George: The comic or the manager?
Jerry: The manager.
George: (disappointedly) Oh.
George: (about Jerry dating Susan's friend) How great is this gonna be? Dinners together, movies together. It'll almost be as good as if I wasn't getting married!
Perhaps Kramer didn't need more sleep after all: there really IS a restaurant that serves only variations of peanut butter and jelly sandwiches. It was featured in a segment on the Food Network, and was named PBJ's
The shoelaces Susan says she'll get for George come up again in "The Wait Out" when George tells her they're working out fine.
David Steinberg: David Steinberg (the comic, not the manager) is a former stand-up comic who has directed a number of shows including Seinfeld and Curb Your Enthusiasm. He also hosted Seinfeld co-creator Larry David as a guest on his TVLand talk show Sitdown Stand Up.
George: "We could be like the Gatsbys! Didn't they always like, you know, a bunch of people around, and they were all best friends?"
One additional reasons why this quote is incorrect is that there never were any [plural] Gatsbys. In F. Scott Fitzgerald's 1922 The Great Gatsby, the only character named Gatsby is Jay Gatsby, who has no apparent family or relatives throughout the story. The only relative he has, his father, appears after Gatsby's death. And, even though he was a family member, we learn during the story that Gatsby changed his name from James Gatz to Jay Gatsby. Thus, his father's name was Gatz.