Nightmares

In which nightmares become reality, Buffy loses her humanity, Willow loses her cool, Giles loses his perspicactiy, and Xander loses his clothes. (Exhibit B in the 'Xander is Hot' debate)

From the old WB Buffy website:

NIGHTMARE AT SUNNYDALE HIGH - The world of nightmares and reality become one when everyone in Sunnydale is living out their worst fears. While Xander comes to school in his underwear and Giles is unable to read, Buffy must unravel the mystery before reality folds completely into the world of nightmares.

Cast:

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

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• Anthony Stewart Head as Giles
• Charisma Carpenter as Cordelia
• Mark Metcalf as The Master
• Kristine Sutherland as Joyce
• Andrew Ferchland as The Anointed One
• Dean Butler as Hank Summers
• Jeremy Foley as Billy Palmer
• Justin Urich as Wendell
• J Robin Miller as Laura
• Terry Cain as Mrs Tishler
• Scott Harlan as Aldo Gianfranco
• Brian Pietro as Coach
• Johnny Green as Way-cool guy
• Patty Ross as Cool Guy's Mom
• Dom Magwili as Doctor
• Sean Moran as Stage Manager