Funniest moment so far is outside of riverwood.i.just.started the game and.im taking everything in.i walk to this camp site with no one there as I turn around I acciddently hit my shout button and I see and elk,three bandits and a fishman run like the dikeens.i know I will have more but this is a start.

I accidentally used Whirlwind Spirit on the Rimerock Burrow bridge when heading towards the Northwatch Keep twas a doozy. Also I accidentally used Whirlwind Spirit instead of Unrelenting Force off the top of the mountain exiting the High Hrothgar as a dragon attacked me on my way down the mountain I can safely say I survived the ten seconds of the 11 second fall.
Note: Do not Whirlwind Spirit to dragons in the air until you know what is in front of you.