List of movies Roger Ebert gave four stars, ranked best to eh. This is NOT a complete list of all of Roger Ebert's four star movies. In fact, the famous critic gave nearly 1,000 movies 4-star reviews in his 46 year career writing for The Chicago Sun Times, many of which have long since dropped from the collective consciousness. So this list doesn't include all of them, but (hopefully) all of the ones you have actually heard of, plus a few that you should consider watching. If I missed any important ones, feel free to add them!
For the record, Roger Ebert was not a fan of ranked movie lists, but he did make one, once, in 2012. In alphabetical order, Roger Ebert's favorite films were:2001: A Space Odyssey
Aguirre, the Wrath of God
La Dolce Vita
The Tree of Life