Actor Allusion: In the episode "University Challenge", the challengers from "Footlights College, Oxbridge" are played by Ben Elton, Stephen Fry, Hugh Laurie, and Emma Thompson. Thompson, Fry and Laurie know each other from their time in the Footlights Club at Cambridge University, and the plotline was inspired by Fry's appearance on the real University Challenge in his student days. "Bambi", whose bias toward Footlights College drives this part of the plot, is played by Griff Rhys Jones, who was also in the Footlights Club. (The real life Bamber Gascoigne was a member in the 1950s too.)
The Cast Showoff: Alexei Sayle was given an opportunity in each episode to show off his stand-up comedy skills (hence each episode credited him with 'Additional Material').
Creator Backlash: Alexei Sayle initially wasn't too fond of "Bambi" allegedly because it gave too much focus to the "lighter", college-educated side of the alternative comedy circuit.
Ade Edmondson, who played bloody, violent Vyvyan, is much nicer in contrast to his character, and says he only ever gets violent when drunk, and would never reach Vyvyan's levels. He's also famously easy to work with, and asks his fellow actors exactly what they'd ask from him to make it easier to do. When Rik Mayall died, he offered an honest goodbye to his old friend, and even included one last heartwarming joke just because he knew Rik would like it.
Rik Mayall was also famously easy to work with, and did many charity runs because of his fame, in part because of what it would draw because of him, and also to show he wasn't like Rick at all.