This is Lucy Liu's third and final appearance in the show.
On Joey's Magna Doodle: A family walking beneath the night sky.
Goof: Joey is talking to Brody. He has a cup in his left hand, then when the shot changes, it's in his right.
Goof: Joey is speaking to Lauren. In between shots when we see Lauren, the items on her desk change position.
Gina says there's another kind of lasanga piece, because she lost her nail in there. Then she holds up her right hand. (To show the nail without the red nail polish.) A few seconds later, her right hand is visible again, but the nail is now red.
At the very beginning of the episode when Gina is taking her lasagna out of the oven, Drea de Matteo's tattoo is visible.
on Joey's Magna Doodle: Logo for Fox Motocross Gear
It is said that Joey has always confused elves with gypsies. However it was shown in season 1 of Friends that Joey had a job as one of Santa's elves at the mall during Christmas time. At the New Year's Eve party, the girl he brought even said that it was the first time she had ever mentally undressed an elf.
One of the things Joey asks for when he calls Alex over in the middle of the night is jelly. It was well established in several episodes of Friends that Joey loves jams and jellies.
on Joey's Magna Doodle: a dog peeing on a frightened snowman, instead of on the nearby fire-hydrant
When Gina is talking to Joey about counting cards, she says that she is Victoria from England and she thinks she is talking in an English accent. Throughout various episodes of Friends, Joey had difficulty speaking in different accents as well, thinking he was using one dialect when he was really speaking in another.
When Bob Saget is thrown out of the pageant, he says 'nice speech Gloria Steinam'. Gloria Steinam is a popular American feminist icon.
On Joey's Magna Doodle: Lilies and a hummingbird.
Danneel Harris (who plays Katie) was on two episodes of JAG. Gina has mentioned several times that JAG was her favorite show.
It is revealed that Howard doesn't have functional tear ducts.
On Joey's Magna Doodle: a stunt rider on a motorcycle.
Goof: In the scene were Michael is running lines with Joey, the position of Michael's book keeps changing position on the foot stool in between shots.
Gina says that when Michael was 5 she was 20. However, it was previously established that Gina gave birth when she was 16, so she would have been 21 when Michael was 5.
Time Index 4:26 and just a few seconds thereafter. When Donna comes up behind Joey to cover his eyes, he starts to tilt his head back and says 'Oh!' just a moment before she actually gets her hands over his eyes.
On Joey's Magna Doodle: a cowboy riding a bomb through the air (scene from Dr. Strangelove).