Blast from the past: See reunited casts from All That, Clueless, Buffy, and more at '90s Con

Clueless stars Breckin Meyer, Elisa Donovan, Stacey Dash, and Alicia Silverstone.

Sabrina the Teenage Witch stars Jenna Leigh Green, Nate Richert, Beth Broderick, Caroline Rhea, and Melissa Joan Hart.

The Wonder Years stars Olivia D'Abo and Danica McKellar.

NSYNC's Chris Kirkpatrick, 98 degrees Jeff Timmons, and NSYNC's Joey Fatone.

All That stars Lori Beth Denberg, Danny Tamberelli, Kenan Thompson, and Kel Mitchell.

Charmed stars Holly Marie Combs, Drew Fuller, Brian Krause, Dorian Gregory, Shannen Doherty, and Rose McGowan.

Buffy the Vampire Slayer stars Marc Blucas, Kristine Sutherland, Julie Benz, Claire Kramer, Charisma Carpenter, and James Marsters.

Beverly Hills, 90210 stars Rebecca Gayheart, Ian Ziering, Tori Spelling, Jennie Garth, and Jason Priestley.