Mad Men fans know that before this week’s amazing episode (full of tractor accidents, taxidermied snakes and clandestine hotel magnate meetings), we had an episode dedicated almost exclusively to the birth of Don and Betty’s third child, packed with surreal dream sequences. We were given a prolonged look into Betty’s deep subconscious.

Since then, I’ve read a few articles on whether dream sequences are a good idea. I think it’s like any other plot device—there are good ones and bad ones. But what do you guys think? Here are a few of the dream sequences I can remember seeing, to help you make up your mind.

The Dude dreamed to a Kenny Rogers soundtrack in The Big Lebowski.

Big Pussy slept with the fishes in Tony Soprano’s dream.

The dream sequence in Alfred Hitchcock’s Spellbound was designed by Salvador Dali.

Agent Cooper had a memorable dream in Twin Peaks.

This dream from American Werewolf in London is just a bit bloody. (You may want to turn the volume down a smidge.)

I’ve never seen The Science of Sleep, but this is a pretty trippy dream.

And finally, “Joel, get off the babysitter.” On a separate note, I couldn’t find the Risky Business dream where Joel walks into the final exam with only five minutes left, but I’ve had that dream about 500 times.