I used to be under the impression that all Thoroughbreds were hyper and awful and hot.
Then here enters Milo, my calm seven year old TB cross who is unflappable, even when you're trying deliberately to spook him, patiently gives pony rides to the most fearful and unskilled of riders, and who will be led by said unskilled persons with his head low and steps slow and even. Stereotype gone.
Not to say any horse doesn't have their moments, but it gave me quite a good view of the stereotypical hot breeds, such as TBs and Arabians, that I had previously been a little biased about.
Step one: Mount horse. Step two: Stay mounted.