That's tough, but off the top of my head:
5 (tie). Haunted Mansion & Pirates of the Caribbean, Magic Kingdom. HM for its brilliant stretching room and halls. POTC for its chilling, detailed, labyrinthine and awesome descent into the world of pirates.
4. (tie) Tower of Terror (MGM & TDS versions): Details on top of details. Perfect setting up of the story.
3. Harry Potter & Fobidden Journey, IOA: Among the very best design & technical effects. At 3 rather than 1 because of repetitiveness of character spiels.
2. Indiana Jones Adventure, DL, TDS: Directly replicates the adventures Dr. Jones might have in exploring temple ruins.
1. Journey to the Center of the Earth, TDS: The Terravators are a ride in themselves.
There are a bunch of other really great ones that deserve mentioning in a "top queue list", including Kali River Rapids, Everest, Splash Mountain Tokyo, MK's Space Mountain, Paris Haunted Mansion & PotC, IOA's extinct Dueling Dragons, Great Movie Ride (in setting up the films you are about to see), the extinct Living Seas (counting The Sea film & Hydrolators).
Five Worst... not sure I can list the five worst, as bland, cattle-gate switchbacks can be found all over Disney & Universal parks.