I found this video of “The 5 Best Roller Coasters”. Of course they will not be everyone’s top theme park rides but it’s a good selection (at least a good selection of North American rollercoasters):
In order he rates them:
5. Kingda Ka – Six Flags Great Adventure, New Jersey
4. Goliath – Six Flags Over Georgia
3. Storm Runner – Hershey Park, Pennsylvania
2. Medusa – Six Flags Great Adventure, NJ
1. Millennium Force – Cedar Point, Ohio