This may be old to some, but new to others. The Umbilical Brothers are two Australian comedians/mimes, David Collins and Shane Dundas, who use mimicry and sound effects to make hilarious acts. The first time I saw this I was pretty amazed because these guys are extremely talented and have a very unique act. You have to see it to understand what I'm talking about. If you like them, just click here.

The Umbilical Brothers in Jay Leno and Letterman