Conversation so far:
when did buffy the vampire slayer first air
Buffy the Vampire Slayer premiered on March 10, 1997.
Who plays buffy in Buffy the Vampire Slayer
Buffy Summers is played by Sarah Michelle Gellar in Buffy the Vampire Slayer
who plays xander in Buffy the Vampire Slayer
Xander Harris was portrayed throughout Buffy the Vampire Slayer by Nicholas Brendon and in two episodes by his twin brother, Kelly Donovan.
who was the creator of Buffy the Vampire Slayer
Buffy the Vampire Slayer was created by Joss Whedon

Question: when was the last episode
Self-contained rewrite: when was the last episode of Buffy the Vampire Slayer