I get extreme motion sickness....terrible actually. I found MIB and the Spiderman rides fine...very smooth and truthfully, there is always something on those two rides that seemed to draw my attention away from the spinning. As for Cat in the Hat, I found this ride very difficult, and have not ridden it again. I found that the spins were much more violent and felt like there was more of them (didn't count a comparison, it just felt like more, IMHO). I also found that although there was alot to look at, it wasn't enough to actually draw my attention away from the spins...not esthetically as pleasing as Spiderman or MIB. I personally cannot go back on this ride without a large dose of Dramamine and even then, that may not help me on this ride.