cherry tomatoes?????

I have always thought of cherry tomatoes as round inch size circles. I have a plant in a pot on my porch that has me puzzled. It has small plum tomatoe shaped tomatoes,some little little round like grape tomatoes. I am beginning to think(I do once in awhile) that they swept the floor in the nursery and took a bunch of seeds and put them in a pot and out came my bush. How did they know I could handle such a strange batch? It is fun to see what is going to come up next!