Liz, our master gardener, picked up these funky perennial plants at a Master Gardener plant swap. They are called "Egyptian Walking Onions." The plant grows straight up and sprouts a head of little onions. The weight of the clustered onions causes the stalk of the plant to bend down (or walk) and the little onions plant themselves and grow a new stalk. Fascinating!
It has been a lot of fun to watch, and the onions are very tasty, too! The cool part is you can eat either end of the plant and they re-seed themselves so you don't have to save the bulbs. Deadead if you don't want volunteer seedlings next year.