Thunder is awesome at night, it just seems faster and more out of control at night. Also if the timing is right with parades, the ride can be a walk-on. Same thing with Everest, it feels faster in the dark, I miss the evening EMH they used to have. 7DMT was great at night, especially when it only has 10 minute wait before park closing.
I'll also say Haunted Mansion and Pirates. Coming out of the blinding Florida sun, my eyes need time to adjust. Riding those at night, I can make out more details.