Bob & Carol & Ted & Alice: All the secrets and big mistakes

Leif was 5 when he first appeared. The movie was the fifth highest-grossing of the year.

BCTA is full of sneaky cameos. Bill Cosby pops up super quick — blink and you’ll miss him.

Here’s how to spot him: He’s in a hat, red shirt, and sunglasses. He bumps into Bob in the nightclub scene as they head to their table.

Then, if you’re eagle-eyed, you’ll see Donald F. Muhich, who plays Alice’s therapist. Cool fact: He was Paul Mazursky’s real-life therapist.

Oh, and don’t forget the yelling guy in the background at Esalen — that’s Paul Mazursky himself.