In Underneath, Spike says of the Camaro, “You never heard of Knight Rider? Knight 2000? K.I.T.T.?” He’s referring to Kinght Rider, an Eighties TV show starring David Hasselhof, which featured his car with artificial intelligence.

The tunnel to Lindsey’s suburban hell dimension in Underneath is the same tunnel which served as the entrance to Toon Town in Who Framed Roger Rabbit?.

In Underneath, when Angel is talking to Spike about how he should have never let Fred leave Pylea, he says, “bad things always happen here”. Fred said the same line when referring to Pylea in Through The Looking Glass.

In Tome Bomb, Gunn says, “This place just went Poseidon on my ass. I don’t know which way is up.” He’s referring to the movie The Poseidon Adventure in which a passenger ship capsizes upside down.

David Greenwalt left Angel at the end of season three, but returned in the final season to direct the episode The Girl in Question.

In Power Play, Illyria and Spike have the following conversation, in which Spike suggests that his and Angel’s relationship may have been more than we thought:

Illyria: “You’ll have proof soon enough. A corrupted ruler on such a path sees
treachery and betrayal all around him. He cannot suffer intimates …

Lilah Morgan survives two Wolfram & Hart massacres - when locked in a cellar with Darla and Drusilla and by The Beast in Habeas Corpses.

Vladimir Kulich played The Beast during season four of Angel. Born in Prague, he began his acting career at the State Theatre of Czechoslovakia. Kulich speaks several languages fluently. He moved to to Canada and then the US, where he was cast in guest-starring television and feature roles. His most …

The fourth wall is the imaginary invisible wall at the front of a stage or camera, through which the audience sees the action playing out. The fourth wall is “broken” in Buffy and Angel - in the musical Once More. With Feeling, Buffy, Xander and Anya sing whilst looking at …

The first and only time we see Cordelia’s parents is in Supersymmetry. They can be seen in one of the pictures that Cordelia hangs up to help her remember who is who.

The title of the season four Angel episode Slouching Toward Bethlehem comes from the poem ‘The Second Coming’ by William Butler Yeats, first printed in 1920. The poem is as follows:

The Second Coming
Turning and turning in the widening gyre
The falcon cannot hear the falconer;
Things fall apart; the centre cannot hold;
Mere …

At Lorne’s show in Las Vegas in The House Always Wins, Buffy and Angel writer David Fury can be seen in the front row, with a bobblehead Kelly Manners.

Andy Hallett (Lorne) is credited as “Special Guest Star Andy Hallett” in the episode The House Always Wins. From this point on, Andy appears in every episode of Angel.

The Beast was a huge demon who was constructed entirely from rock. It had two distinct curved horns and bright yellow eyes. Cordelia began to see visions of The Beast, who eventually clawed it’s way up through the Earth, emerging at the very spot where Connor was born. The Beast …

Oliver Seidel was a noted Physics professor who first got Fred interested in the subject. He introduced his past student when she gave a presentation for the Physics Institute on Supersymmetry. However, Fred discovered her idol was not all he seemed. Jealous of his gifted students, he had researched portals, …