Loose Threads:

None yet.

Notables:

Lawndale High has a Varsity (implying there's also a non-varsity) Interpretive Dance team.

The two agents were probably inspired by Scully and Mulder from The X-Files, which the title may also be a play on.
This episode may also be inspired by the geek profiling wave that happened after the Columbine shootings.

The pizza-boy is the same guy who hung around UFO conventions in "Esteemsters," and was even on Sick, Sad World. His name is Artie.

The car that breaks down on Trent's "Happy Herb" commercial is a 1970 Ford Torino.

Mr. O'Neill's Karl Marx costume at the end bears a slight resemblance to one worn by Woody Allen in "Bananas," a movie spoofing dictators.

Mistakes:

None yet.

Double Meanings:

None yet.