Here are some of my personal favs ^_^
A fighting one: A MUST SEE!!! the maker of this did a fantastic job, its actually quite scary how professional it is.
Another fighting one ^_^ *not as good as the first in my opinion, but then they are different artists*
http://www.youtube.com/watch?v=ftgYbFqichY
And other favs *mainly IxR* can't be helped, i'm a fan of the pairing. lol
*another MUST SEE*
http://www.youtube.com/watch?v=P7ZKM3BTouo
http://www.youtube.com/watch?v=l6kUYkmUl1E