I am basing my list on attractions that I would be most upset if I was not able to experience while at WDW.
1. Splash Mountain - The length of this ride, and the fact that I could do it over and over again without getting tired of it, makes it #1 on my list. We rarely do it less than 3 times per visit to MK. Plus it is fun posing
2. Mickey's Philharmagic - This attraction really gets me into the Disney spirit, as it recaps the highlights of some of the best (newer) Disney animated films.
3. Toy Story Mania! - This ride is fun, but as part of a very competitive family, the competition to score the highest points makes it even more fun for our family.
4. BTMRR - This is just a fun roller coaster that even young kids can enjoy... I think this was the first roller coaster I was ever on.
5. Space Mountain - A roller coaster in the dark - whats not great about that.
6. Test Track (original) - I don't really like the new theming as much as the original, but the ride is still fun.
7. Tower of Terror - Another lengthy ride that cannot be missed.
8. Expedition Everest - There are some strong G forces on this ride... always thrilling.
9. Lights, Motor, Action - My 6 year old son and I loved this show... it will be missed... Star Wars land better be good.
10. Rock 'n' roller Coaster - Although I really don't like to go upside down, this is the wildest ride in WDW.
Honorable mention - Haunted Mansion, PoTC, Soarin', Festival of the Lion King, Peter Pan, Jungle Cruise - The ride is not that great, but you have got to love the jokes... The fact that I use some of the jokes in my everyday life proves that while the jokes aren't the greatest, they are at least memorable. (That may look like water, but its snot. Pair of Dox. The zebra is sleeping.)