Joss Whedon posted at Whedonesque in April 2005 about how he set about writing The Body:
“I had the arc mapped out years before I made the ep, and I always knew it would be MY ep. But when it came around I was filled with ideas for expansion, movies, comics, …

In Buffy vs Dracula, Giles falls into Dracula’s basement, where he is surrounded by the sisters. After he falls he says, “Good show, Giles. At least you didn’t get knocked out for a change.” In A New Man, Giles says he has a “tendency to get knocked on the head”. …

Buffy fills Riley in on the details of the Mayor’s Ascension in A New Man. Just how long have the Initiative been in Sunnydale? It seems to be only a short time if he knew nothing about the demise of last season’s nemesis.

Ethan is supposedly staying at the Sunnydale Motor Inn in A New Man, but the shot outside his motel is of a place called the Downtowner Apartments. This is exactly the same shot which was used in Faith, Hope and Trick, when Faith was staying there. The car at the …

In A New Man, Professor Walsh makes a joke about Buffy having been in her class, but not all the time. In Fear, Itself, Buffy missed a class due to being depressed about Parker.

Professor Walsh discovers that Buffy is the Slayer in A New Man. She nastily tells Buffy, “It’s only our methods which differ. We use the latest in scientific technology and state-of-the-art technology. You, if I understand correctly, poke them with a sharp stick.”

In A New Man, Willow lies when Buffy says, “I didn’t hear you come in last night”. This is the first sign that something is going on with her and Tara. The girls also do a highly charged spell on a rose together.

Anastasia Horne, who played Percy’s date Laurie in Doomed, has also been in Port Charles (as Lark), The Batchelor and Boy Meets World.

At the party in Doomed, we hear ‘Hey’ by The Hellacopters while Willow talks to Percy and ‘Mouth Almighty’ by Echobelly, when Willow overhears Percy talking about her

When looking at a mystical symbol in Doomed, Xander says, “It’s kind of the CBS logo. Hey, could this be the handiwork of one Mr. Morley Safer?” CBS is a television network whose logo is an eye. Morley Safer is a news caster for CBS.

In Doomed, Forrest thinks Riley is talking about the band Slayer: “thrash band. Anvil-heavy guitar rock with delusions of Black Sabbath.” Fred thinks the same thing in SDpin the Bottole - “Slayer? The band?”

Referring to a fancy Initiative device (which looks like a Nintendo Gameboy) held by Riley in Doomed, Buffy says, “Is this really the time for Donkey Kong?” In the scene when Faith (in Buffy’s body) has slept with Riley in Who Are You? the camera pans up from the bed …

In Doomed, Buffy realises that Riley has never heard of the Slayer, though Forrest had. He says to Riley that she is a myth, “some kind of bogeyman for the Sub-Terrestrials. Something they tell their little spawn to make them eat their vegetables and clean up their slime pits.”

In Doomed, Buffy talks about a failed relationship with someone who knew her secret identity - she is obviously talking about Angel.

In Doomed an earthquake in Sunnydale signals the end of the world (again). The last time there was an earthquake was in season one’s Prophecy Girl, when the Hellmouth opened and the Master drowned Buffy. Buffy says, “the last time we had an earthquake I died” referring to the events …