For those that don't understand the "two thumbs up"...
It's from Siskel and Ebert. Two thumbs up was the best they'd give a movie, meaning both critics liked the movie.
Ebert and Chicago Tribune critic Gene Siskel helped popularize nationally-televised film reviewing when they co-hosted the PBS show Sneak Previews, followed by several variously-named At the Movies programs. The two verbally sparred and traded humorous barbs while discussing films. They created and trademarked the phrase "Two Thumbs Up," used when both hosts gave the same film a positive review. After Siskel died in 1999, Ebert continued hosting the show with various co-hosts and then, starting in 2000, with Richard Roeper.