# Trivia

Raj suggested recruiting Mayim Bialik to their Physics Bowl team in The Big Bang Theory: The Bat Jar Conjecture (2008).
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First appearance of Amy Farrah Fowler (Mayim Bialik). The character is loosely based on Gilda, a character that was cut after the failed first pilot of the show.
This marks Leslie Winkle's last appearance on the show. Sara Gilbert would go on to produce and co-host CBS's The Talk (2010).
Christine Baranski is in The Good Wife, the show Raj Watches and she also played Leanord's Mother in The Big Bang Theory.
Sheldon only drinks hot chocolate in months with an "r" in them. Thus, his quirk doesn't allow him to drink hot chocolate in the consecutive months of May, June, July, and August, which spans the summer season in the Northern Hemisphere.
Leonard estimates the height of the lift shaft by timing how long it takes until he hears breaking glass. This is done by multiplying the number of seconds by itself and then multiplying by 16 (to get the height in feet) or 5 (to get it in meters). Given that the time is about a second and half, Leonard's estimate of 30 feet is a reasonable one, which isn't bad, given that he is drunk at the time.
The gang uses the returning laser to determine the distance to the moon. Leonard reports that the laser echo took two and a half seconds. Given that the speed of light is 300 000 kilometers per second, the total distance to the moon and back must be 750 000 kilometers, which means that the reflector on the moon's surface must be 375 000 kilometers from the Earth.
Most of the characters dress as though they were in the '80s during the flashbacks, even though they take place in 2003.
The title refers to the moon and their experiment to bounce a laser beam off the reflector left by the Apollo 11 astronauts.
Penny complains that now she can only date intelligent men like Leonard, she can no longer tolerate strong good looking simpletons.
Mayim Bialik is best known for her role as TV's Blossom (1990).

#### Spoilers

The trivia item below may give away important plot points.

Amy Farrah Fowler would gradually evolve into one of the most popular six key ensemble lead characters.