I think that it gets really annoying when you get to a higher level and those tougher dragur use that shout that knocks you over. The first time that happend to me I was like wowww did i just die?
That happened to me the other day. I was at the top of a staircase and a draugr deathlord shouted at me and I got an animation sending me tumbling down the staircase. I was shocked that I had "died" because I was at full health and wearing good armor... then I was able to get up. I said "oh. weird." then went back upstairs and killed his undead behind.

