Entropy

In which Xander's girlfriend is back and there's gonna be trouble. Hey-la, hey-la.

Official back-of-box synopsis:

Anya returns to Sunnydale with vengeance on her mind... and ends up hurting Xander in a way she never expected.

Links:

This episode's page at http://www.restlessbtvs.com/, the Restless BTVS Trivia Guide

This episode's page at http://www.vrya.net/bdb/, the Buffyverse Dialog Database

Cross-reference:

episodes in which our heroes get drunk:

• The Dark Age
  Giles - whisky
• Beer Bad
  A Very Special Buffy
• Something Blue
  Willow's "Not drowning, wading" in light beer
• A New Man
  Giles -- again -- too many beers with Ethan
• The Yoko Factor
  Giles - whisky - again
• Life Serial
  Buffy - Tequila - priceless look on her face
• this episode
  Spike and Anya. Hilarity ensues. Oh, wait, not hilarity.

Cast:

• Sarah Michelle Gellar as Buffy
• Alyson Hannigan as Willow
• Nicholas Brendon as Xander
  

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• James Marsters as Spike
• Danny Strong as Jonathan
• Emma Caulfield as Anya
• Amber Benson as Tara
• Michelle Trachtenberg as Dawn
• Adam Busch as Warren
• Tom Lenk as Andrew
• Kali Rocha as Halfrek
• Edie Caggiano as Mother