Were you sad to see Mad Men go last year? Perhaps it'll make you even sadder to learn that the award-winning cable show almost had its own spin-off—twice. Both a Peggy Olson-specific offshoot and a modern-day version were in the cards at one point, but were ultimately axed.

Once every so often, we benefit from a work being left on the cutting room floor. Twin Peaks's abandoned spin-off, for example, ended up inspiring the cult classic Mulholland Drive.

Check out the video above from the mental_floss List Show to learn about 27 other spin-offs that almost happened.