Kungaloosh! at Adventurer's Club at Downtown Disney. LOVE IT!
It's a frozen drink made with strawberry daiquiri mix, orange juice,spiced rum, and blackberry brandy.
I liked the Island Sunrise at the Polys Kona Cafe. If you like strawberry daquari's the Rainforest Cafe at either AK or DTD is super. The best margaritas are defintely at San Angel in Mexico, Epcot. Man am I getting thirsty reading this!!
My favorite is the Northwestern Exposure in the Territory Lounge at The Wilderness Lodge. It is essentially a White Russian with a splash of coke and amaretto.