When BIll Mumy (Lennier) and Walter Koening (Bester) are on the bridge of the White Star, it is the first time that former cast of the science fiction classics Lost in Space and Star Trek have shared a scene. (edit)

(on board the White Star in hyperspace with Bester strolling around the bridge)
Sheridan: Try not to drool on the controls.
Bester: You said something, Captain?
Sheridan: Not a word. Just burped.
Lennier: Approaching target area.
(Bester seats himself in the command chair)
Ivanova: Scanners aren't picking anything up.
Sheridan: Alright, let's see what you can do ...
(Sees Bester in the command chair)
Sheridan: Mr. Bester.
Bester: Captain Sheridan.
Sheridan: Get the Hell out of my chair. (edit) Bester: Your war is now my war. (edit) Sheridan: Mr. Bester, we no longer have any ties to Earth or to the Psi Corps. So we don't have to put up with you or your game. Now I am sitting on four brand new uni-directional pulse cannons, give me one good reason I shouldn't blow you out of the sky.
Bester: Curiosity ... Kill me and you'll never know what brought me all the way out here. I think if you weigh that against the brief satisfaction of "blowing me out the sky," you'll do the right thing. ... [long pause] ... Captain?
Sheridan: I'm thinking it over. (edit)

Bester must have a dozen of those psi-corps badges.

In the scene where Garibaldi tosses Bester psi-corps badge, and Carolyn zaps it; you can clearly see that it gets singed quite badly.

In the next scene, Bester has a new and pristine badge on his uniform. (edit) The aliens seen in the female telepath's dream are the race that took Sheridan and Ta'Lon prisoner. They are "the Streib." (edit)

This episode does not have any allusions. Add some now!