This list contains all the feature films mentioned in Matt Singer's "Opposable Thumbs: How Siskel & Ebert Changed Movies Forever" in the order they are mentioned.

"Opposable Thumbs" is a fantastic deep dive into Siskel and Ebert, their background, their shows, and their legacy as the most famous film critics in the world. I highly recommend it for all fans of Siskel and Ebert or of film.

Some of these films are mentioned in the book under different names, which are included in the notes. I did my best to get everything mentioned, but if something is missing, please let me know!

Matt Singer has made a few Letterboxd lists based on his research:
- Surprising Movies That Got Thumbs Down From Siskel, Ebert, or Both
- Surprising Movies That Got a Thumbs Up From Siskel, Ebert, or Both