Writer:	Sarah Fain, Elizabeth Craft
Director:	Bill L. Norton
Star:	David Boreanaz (Angel),  Alexis Denisof (Wesley Wyndam-Pryce),  Charisma Carpenter (Cordelia Chase),  Vincent Kartheiser (Connor),  J. August Richards (Charles Gunn),  Amy Acker (Winifred "Fred" Burkle)
Recurring Role:	Stephanie Romanov (Lilah Morgan),  Andy Hallett (Lorne)
Guest Star:	Jennifer Hipp (Laurie Drummond),  Randy Oglesby (Professor Seidel),  Jerry Trainor (Jared)

This episode received a 3.2/4 in the overnight ratings. (edit) Andy Hallett (Lorne) is credited as "Special Guest Star Andy Hallett." (edit) This marks the first and only time we see Cordelia's parents. They don't appear in person though only in one of the pictures that Cordelia hangs up to help her remember who is who. (edit) Amy Acker does the "Previously on Angel" voiceover. (edit) Elizabeth and Sarah wrote "Supersymmetry" with the intention of having Fred kill Professor Seidel. Tim Minear rewrote the script to have Gunn killing him instead. (edit)

(about Cordelia)
Angel: Wait... you should take her fuzzy slippers... her feet get cold.
Connor: I know, she's always stealing the covers. (edit) Fred: You know what they say about payback? Well, I'm the bitch. (edit) Gunn: All these people here to see you?
Fred: I'm just a minor speaker. (sees the agenda posted outside the auditorium) Oh, God! I'm between Ed Witten and Brian Greene? (Angel and Gunn don't react) Think Nomar Garciaparra and Sammy Sosa. (edit) Gunn: (Fred is writing a problem on the wall) Never liked the paint in here. Yeah, let's... let's redo the place, really make it ours. (edit) Gunn: (about Fred's speech) Listen man, I'm gonna need simultaneous translating on this thing. You know, like the president with the Russians but just give me the highlights.
Angel: No problem. Of course, I have no idea what she's talking about. (edit)

The photo of Fred and Gunn appears to be a studio still of the night Angel took everyone to the ballet in Season 3 since no one had a camera in the balcony where the scene takes place. (edit) When Angel catches Connor sifting through Cordy's things in the beginning... shouldn't he have known it was him by smelling his scent? He seemed to only know when he saw his face. (edit) Watch the floor after Fred opens the dimensional portal and you'll notice that every so often the cgi team forgot to insert it in a couple of spots. (edit) The vortex Fred creates is sucking in furniture and eventually sucks in Seidel's corpse...but Fred and Gunn just stand there without any indication it's pulling on them. (edit)

Comic Rack
Gunn slams the comic shop clerk into a rack holding Dark Horse comics. Dark Horse has published "Buffy" and "Angel." comics. (edit) Lilah: If this is about the Jolly Green Demon...
Lilah in discussing her past actions regarding Lorne she compares him to the mascot for Green Giant vegetables. 'Ho Ho Ho Green Giant.' (edit) Gunn: Think Daredevil. One-eighty-one. I'm Bullseye. You're Elektra. One wins. One dies.
Gunn uses terminology that Jared will understand by referencing a set of Marvel Comics characters from the Daredevil series. The #181 edition can be seen in the film Daredevil, which starred Ben Affleck.

In this issue Elektra is being killed by Bullseye, using her own sai. Bullseye was later paralyzed in a battle with the mourning Daredevil. (edit) Episode Title:
The episode's title, "Supersymmetry," is a reference to a mathematical system in physics by the same name. Supersymmetry is one of the foundations of string theory, which Fred refers to in her research. The term takes on several other meanings throughout the episode, most notably the symmetry of guilt between Fred and Gunn after his decision to kill Professor Seidel for her. (edit) Lilah: Yeah, yeah. Hulk smash.
'Hulk Smash' comes from the Marvel Comics series 'The Incredible Hulk,' as well as the movie, Hulk. (edit)