From minute 21:41 Angel comes in and slips in the hallway. David Boreanaz did really slip, but they kept it in the show.
During the original airing, the first trailer for Angel (1999) was shown. It lasted only four seconds with David Boreanaz turning towards the camera and the words "Angel. This Fall" appearing.
Willow comments that she'll miss the Sunnydale High soda machine which never gives her the drink she chooses, possibly as a result of being bashed about by Buffy in Halloween and Xander in The Zeppo (1999). This is an in-joke as fans had pointed out that it actually dispenses types of soda cans that aren't amongst the choices available on the selection panel.
According to stunt coordinator Jeff Pruitt, stunt double Sophia Crawford was uncomfortable with Buffy's signature leather pants, since she felt they were preventing her from kicking freely.
Eliza Dushku is from Boston. When Faith is telling the mayor about when she was a kid she says she lived just outside Boston. This is also evident by her use of the phrase "wicked gross" when the Mayor says he has to eat several spiders. Wicked is a commonly used slang word for "very" or "extremely" , most commonly used by people from Boston/Massachusetts.