The script for Untouched, in the scene when Bethany comes into Angel’s room while he’s dreaming about Darla says: ‘She slips her hand under the covers and runs it up his thigh”. In the aired version, her hand remains outside the covers.

In Judgement, the hunch-backed demon Mordar the Bentback sings Marvin Gaye’s “Sexual Healing” in Caritas.

In First Impressions we see that Angel Investigations has started to move into the Hyperion Hotel, seen first in Are You Now Or Have You Ever Been?

Actor Denzel Washington Denzel Washington is referenced a couple of times in Angel. In First Impressions, the gang have the following conversation:

Gunn: “I haven’t bothered to see a movie since Denzel was robbed at the Oscars for Malcom X. Later.” [He leaves]
Wesley: “That was quite a performance.”
Cordelia: …

When Darla takes of Angel’s jumper in First Impressions, the tattoo on his back is missing.

The script for First Impressions describes the aftermath of the the garage battle as:

“What’s left of the attacking vamps. Not three neat little piles, nothing too cutesy, but clearly dead dusty chunky vamp dust.”

The first song Angel first sings in Caritas in the episode Judgement is “Mandy” revealing his secret shame - a love of Barry Manilow (”I think it’s kinda pretty”). He also listens to the song in the episode Orpheus, and sings a version for Jasmine in The Magic Bullet.

A demon called Liz sings “I’m So Excited” by the Pointer Sisters in caritas in Judgement.

When we first see Lorne in Judgement, he sings Gloria Gaynor’s song “I Will Survive” in his demon-karaoke bar Caritas. During the song, he also says:

“Oh, you know what I’m talking about. In this city you better learn to get along. Because LA’s got it all: The glamour and the …

In First Impressions, Lorne sings the Oleta Adams song Get Here (If You Can).

Gunn says in First Impressions, “I ain’t buying any of this Dionne Warwick crap” He is referencing singer Dionne Warwick who hosts Psychic Friends Network info-mercials.

The title of the episode Are You Now Or Have You Ever Been? is based on the questions posed during the trials held by the Committee on Un-American Activities associated with Joseph McCarthy. The most famous question was, “Are you now, or have you ever been a member of the …

When the salesman kills himself in Are You Now Or Have You Ever Been?, he’s listening to “Hoop-Dee-Doo” by Perry Como & The Fontane Sisters.

In Are You Now Or Have You Ever Been?, we see that Angel was staying at the Hyperion Hotel in 1952. At that time he was a loner, buying butcher’s blood and keeping to himself. Others found his intimidating.

Thesulac demons are cloaked paranoia demons who whisper to wheir victims, feeding on their innate insecurities. They are tall with chalky skin and tentacles. The Thesulac demon haunting the Hyperion Hotel had claimed the land even before the original building was constructed.