#1.) Splash Mountain (MK)- An absolute masterpiece of engineering and story. When everything is working, Splash Mountain easily tops every ride in Orlando. You don't get story, song, thrills, and amazing special effects like the way Splash Mountain presents it. It's literally the perfect dark ride-flume.
#2.) Pirates of the Caribbean (MK)- Another example of great story telling and amazing music. Pirates of the Caribbean is a true Disney classic and is one the finest achievements that Disney had ever produced.
#3.) The Haunted Mansion (MK)- It creates the perfect mood. First you're scared, then you just want to jump out and celebrate with the Grim-Grinning Ghosts. It's a Disney masterpiece and it was hard choosing Pirates over Haunted Mansion. They are both great examples of great storytelling and design.
#4.) Spaceship Earth (Epcot)- Call me crazy, but I'm happy to say that I nominate Spaceship Earth #4 on my list here's why: It really is the last of the great Epcot dark rides from the 1980's that still remains intact. It's changed slightly over the years (maybe a lot), but it is still as majestic and grand than it was on opening day, even though the descent is lacking show pieces.
#5.) Harry Potter and the Forbidden Journey (IOA)- One of those rare instances when a Universal ride outshines a Disney ride. But you have to consider that this ride won't be relevant in another 30 years, while the attractions mentioned above will always be. There are great effects and a good story, and it certainly is thrilling. HPATFJ is a great ride nonetheless, it never fails to impress me, even though many ride effects are not working. But when they are, it's a great ride.
Honorable Mentions: No particular order
-Big Thunder Mountain Railroad
-Revenge of the Mummy
-Space Mountain
-Jurassic Park River Adventure
-Amazing Spider Man (correct me if the name is wrong)
-Soarin'
-Star Tours
-Expedition Everest (effects working)
Guilty Pleasures: No particular order
-it's a small world
-The Many Adventures of Winnie the Pooh
-Peter Pan's Flight
-Hall of Presidents (underrated)
-Walt Disney's Enchanted Tiki Room
-Maelstrom
-Tomorrowland Transit Authority
-Carousel of Progress
-Muppet Vision 3D
-Ellen's Energy Adventure
-Expedition Everest (Disco Yeti version)
-Dumbo the Flying Elephant
And finally...
-The Great Movie Ride
Rides that seem great, but I'm too much of a chicken to get on:
-Twilight Zone Tower of Terror
-Rock 'N Rollercoaster
-Manta
And there goes my 2 cents!