I love the way Disney puts effort into its queue design!
I can think of too many to list that I love. Splash, PotC, Space Mountain (I even like the inside where it's just back & forth but you can watch the sky), ToT, EE, Kali, and for some reason, I love BTMRR. I know it's plain, but I like that the 2 queues weave around each other.