"Trilled R"

Are there any words in German that involve rolling the r when saying them? My German teacher always does it with some of her words, but I don't know if you have to roll the r in those words.

Hi there, some German accents roll the "r", for example if you are from the far north or far south. in high German the "r" is not rolled no matter what the word is. Do you know where you teacher is from? :D