Amongst all the photos of her boyfriend Eric that cover the walls of her room, Lizzie has stuck up cut-outs of cartoon character Betty Boop.
Rachel convinces Marshall to buy a pet bird in order to attract women.
Marshall is taking a course in Political Science.
Ron's favorite movie is You've Got Mail.
Steve is taking a course called Principals of Macroeconomics.
Ron: My favourite film is You've Got Mail...You got Tom Hanks. You got Meg Ryan. You got a very likeable Greg Kinnear. You think you're better than it... this movie is gonna suck... then you watch it and it becomes a part of you. It's in you.
Marshall: (Drinking beer from a mustard container) This beer tastes like mustard.
Ron: We're not roommates until we kill a keg together.
Marshall: Dude, I'm so excited for class, man I didn't even like sleep last night, you know? I hear like the teachers in college are so cool and like the teachers in high school suck right. And that's why I didn't like learn anything, you know. Man I'm so excited aren't you?
Marshall: I'm a sponge!
Eric: You have some glitter on your eye.
Hal: (to Steve) Where are you going?
Steve leaves the room to go find Lizzie.
Hal: Okay, ignore the voice of reason.
Marshall: Why are you so bored?
Prof. Doogan: Well I just don't like the kids anymore.
Loudon Wainwright III(Hal Karp) does not appear in this episode.
Jason Segel makes his first appearance as Lizzie's long-distance boyfriend Eric. Segel previously played Nick Andopolis on Judd Apatow's Freaks & Geeks. He was the first Freaks & Geeks alumni to guest star on Undeclared.
"Eric Visits" was bumped up two weeks from a slated October 16, 2001 airdate, displacing the intended second episode "So You Have a Boyfriend" at the last minute. Fox didn't like what they saw from the first episode's ratings and went straight into panic mode.
Freaks and Geeks: After they empty the keg, Ron fills up a mini-football helmet with beer and makes a toast. This may be an allusion to the second episode ofFreaks and Geekswhen Bill also uses a mini-football helmet as a cup when getting beer from the keg.
When drunk, Ron admits that he lies about his favourite film. He says he tells people that his favourite film is Red Dawn but it's really You've Got Mail. Red Dawn is a 1984 action fantasy film about World War lll starring Patrick Swayze whereas You've Got Mail is a 1998 chick flick starring Meg Ryan and Tom Hanks.
Steven tells Lizzie that she should take a break from her boyfriend by telling her it's like how Sting said that if you love somebody set them free. He is referring to the 1985 hit by UK pop star Sting called If You Love Somebody Set Them Free.
Hal mentions decorating his apartment by going to "that Swedish" place and "beyond the bathroom."
He is refering to Ikea and Bed, Bath and Beyond.