When Steve steps onto the bus in the final scene of the original airing of the episode and in syndication the song that was playing was 2000 Miles by the Pretenders, but on the DVDs the song was changed.
When the gang is sitting around talking about Donna and David's odd relationship, Brenda's hand switches back and forth from being under Dylan's arm holding his hand to being at her side and it's very noticeable.
Steve: I was actually thinking of breaking down and asking Kelly to the dance. I think she deserves another chance.
Brandon: You're giving her another chance. Isn't she the one who broke up with you?
Steve: Yeah. But I forgive her.
Brandon: I don't waltz, I don't rumba, I don't fox trot, I don't boogie, I don't dance. I don't even like to be in the same room with people who are dancing.
Dylan: If that's her idea of a platonic relationship, I'd love to see what she does when she gets physical.
Chuckie: I was telling Brandon about my life story. You were a part of it.
Donna by Ritchie Valens
Have Yourself A Merry Little Christmas Instrumental
Jingle Bell Rock by Bobby Helms
Hey Donna by Rhythm Syndicate
I Adore Mi Amor by Color Me Badd
2000 Miles by the Pretenders
Scott Jaeck and Shannen Doherty later work together for an episode for Charmed; he plays her dead mother's ex-whitelighter.
Apart from being the "evil" character's name, it's also the name of the doll from Child's Play and the other Chuckie movies, in which the doll kills people, and won't go away.