Starting with the biblical and ending with the bizarre, here's my list of top 10 witches in pop culture:
1. The Witch of Endor. Star Wars fans are scratching their heads at this one, trying to figure out how witches and Ewoks are related. But the Witch of Endor (or rather, "Ein-Dor") figures prominently in the book of Samuel. After Samuel's death, King Saul banished all practitioners of magic, but when he received no responses from God or the priests, Saul sought out the witch for advice about how to handle problems with the Philistines. The witch called up the ghost of Samuel, who provided no advice, but predicted the king's death. So much for reassurance from the occult.
2. The Three Weird Sisters, from "Macbeth." "Double, double, toil and trouble...fire burn, and cauldron bubble." I memorized this scene in high school, and I still remember it. The "weird sisters," as these witches are known, were the voice of prophecy, and they shared with Macbeth the prophecies that guide his actions and understanding of events.
3. The Wicked Witch of the West/Elphaba. In the 1939 "Wizard of Oz" film starring Judy Garland, "witch" actress Margaret Hamilton was apparently so scary in her role that she couldn't go back to her teaching job after the production wrapped. "I'll get you, my pretty, and your little dog too," followed by an evil cackle that could raise hell, was too petrifying to young ears. Later, with the book and the musical "Wicked," the Green Witch got a name (Elphaba), an extensive songbook, and a backstory that enabled us to understand why she became a wicked legend.
4. Dorrie, the Little Witch. A series of children's books by Patricia Coombs featured a little witch who was always getting into trouble. When the first book appeared in 1962, Coombs established Dorrie as a kid who was entirely normal and flawed, despite being a witch. Dorrie has proven to be an enduring character; the most recent book was written in 1992.
5. Jennifer, from the book "Jennifer, Hecate, Macbeth, William McKinley, and Me, Elizabeth." Aside from being the first name in the longest-titled book I ever had on my shelf as a kid, Jennifer is the antidote to Elizabeth's alienation in school. Plus, she's a witch. Published in 1984, I was as obsessed with Jennifer and Elizabeth as the apprentice witch, as I was with learning who Hecate, Macbeth, and William McKinley were. Long title, but E.L. Konigsberg, author of my other favorite long-named children's book ("From the Mixed Up Files of Mrs. Basil E. Frankweiler"), is probably used to it.