Jebus, I will have to admit that the tomb soliers are kick bellybutton and they deserve all the respect in the world. I know what it is like to stand guard at a memorial for 2 hours and ther POA makes you more tired than 2 hours of physical exertion.
But IMO the Marine Corps Silent Drill Team is the schiznit. If I remember correctly they are the only ones to use "live" bayonets in their routine.