Swarm: Pleasent. I had been informed that it was fairly boring, fairly slow, and fairly forceless. Instead, I got a great ride with a suprising amount of force. Great ride!
Stealth: Pleasent. I first rode the ride when I was quite a bit younger, and hated it. I then gave worked up the courage to ride it again, and loved every second.
Nemesis: Unpleasent. I was told it would be amazing and "the best ride evaaaaaaar". Instead, I got a fairly good Invert, but I still prefer Vampire and Air. Plus, on the inversion voer the station, my hand hit something on the train, so that scared the flip out of me.
Nemesis - Sub Terra: Unpleasent. Got of it sore after being confronted with strobes, incredibly loud audio, and a painful pokey thing in my back. The seatbelt was uncomfortably loose, and the "scare maze" at the end consisted of nothing.