Episode 71: The Summoning (Season 4, Episode 3)
Synopsis: In which the Vorlons strike back, G’kar endures, and there are many happy returns.
Room 101/Two Minutes Hate/Goldstein! Goldstein! Goldstein! - a very 1984-heavy episode this week (the book and film, not the sub-par Van Halen album).
Warning: Trek digression starting about 12 minutes in. Mostly slagging on TNG interior design and costuming nightmares.
Max the Cat appears briefly in the background at about 20 min.