Season 1	Season 2
Welcome to the Hellmouth The Harvest The Witch Teacher's Pet Never Kill a Boy on the First Date The Pack Angel I, Robot -- You, Jane The Puppet Show Nightmares Invisible Girl Prophecy Girl	When She Was Bad Some Assembly Required School Hard Inca Mummy Girl Reptile Boy Halloween Lie To Me The Dark Age What's My Line (Part 1) What's My Line (Part 2) Ted Bad Eggs Surprise Innocence Phases Bewitched, Bothered, and Bewildered Passion Killed By Death I Only Have Eyes For You Go Fish Becoming (Part 1) Becoming (Part 2)
Season 3	Season 4
Anne Dead Man's Party Faith, Hope, & Trick Beauty and the Beasts Homecoming Band Candy Revelations Lover's Walk The Wish Amends Gingerbread Helpless The Zeppo Bad Girls Consequences Doppelgängland Enemies Earshot Choices The Prom Graduation Day (Part 1) Graduation Day (Part 2)	The Freshman Living Conditions The Harsh Light of Day Fear, Itself Beer Bad Wild At Heart The Initiative Pangs Something Blue Hush Doomed A New Man The I in Team Goodbye Iowa This Year's Girl Who Are You Superstar Where the Wild Things Are New Moon Rising The Yoko Factor Primeval Restless
Season 5
Buffy vs. Dracula Real Me The Replacement Out of My Mind No Place Like Home Family Fool For Love Shadow Listening to Fear Into the Woods Triangle Checkpoint Blood Ties Crush I Was Made to Love You The Body Forever Intervention Tough Love Spiral The Weight of the World The Gift

Disclaimer: I haven't had a chance to rewatch the earlier seasons, so those episodes won't be nearly as comprehensive as others. Whenever I get a chance, more quotations will be added to their respective episodes. As always, the words are the property of Joss Whedon and his writers.