Buffy the Vampire Slayer Season 6 Episode 16

The day of the wedding has finally come and Xander and Anya are preparing for the hoards of “guests” to arrive. While Xander’s screwed up human family go head to head with Anya’s mostly non-human friends, a special guest approaches Xander to warn him that his life with Anya may not turn out to be the married bliss he has hoped for.