The plant pictured above is called Mimosa Pudica. Also known as Shy Grass or Sensitive Plant.

It looks pretty plain at first glance but something super cool happens when you touch them.

Check out the video below.

They freaking shrink and close up!

I've seen these in Hong Kong and they're pretty fun to play with. They close right when you touch them and open up a couple minutes later. I have no idea why they do that but its pretty cool.