At one point in time—let’s say 1978—John Travolta was the coolest dude on the planet. He was as smooth with the opposite sex as he was on the dance floor in Saturday Night Fever. He was a good-hearted dim bulb on Welcome Back, Kotter. And he drove “Greased Lightning” and got the girl in Grease.

Then his career died down for a while, but he came back stronger than ever with an Academy Award-nominated performance in Pulp Fiction. Since then, Travolta has been an ever-present part of the pop culture, but over time he’s gotten a bit … weird. Here are some of Travolta’s most unusual public moments.