All of these are marvelous.

http://www.youtube.com/watch?v=YN3yssIKnto&feature=related

http://www.youtube.com/watch?v=dWCAeKKLeLw&NR=1&feature=fvwp <— Especially this one. That look near the end. Holy hell.

http://www.youtube.com/watch?v=_48OKZqYzHM&feature=related

http://www.youtube.com/watch?v=ToDZ9Q2hIBk&feature=related

http://www.youtube.com/watch?v=_TsR1yiAe9g&feature=related