We were evac'd from Dinosaur in January, my first and only time on the ride. We were about 3/4 of the way through and the lights and sound went out, with an announcement that there was a malfunction and we would be evacuated shortly. However the car was still bouncing. Not moving forward, just bouncing around. Then the work lights came one and we could see all of the dino bits and fake shrub glued to the wall and sitting around. DH noted that all of the sound FX and lighting had been off the whole time (I had no idea). Finally the car went still, but our seat belt locks were still on. Finally they went unlocked, and eventually CM's came around to escort us out (telling us to stay out of the middle of the track), all in all stuck for around 30 minutes. We got fast passes, but it was our last ride of the day. Was very strange being stuck on the car in that way, but our other riders were friendly so it wasn't too bad.
Also been evac'd from EEA before the big bang, and stuck for not too long on HM, PoTC, and IaSW.