1) This one's about 12 minutes or so (terrible freakin' music though!):
http://youtu.be/itdxGSW3nlw
2) This one's about 18 minutes or so
http://youtu.be/mErNe9jiXAY
#Here's a 7 minute quickie:
http://youtu.be/G5-DpwU4hCM
4) This is a pretty cool one:
http://youtu.be/wwq2bdCMcz0?list=PLCz86eDRd_6iGz19fih2O940W7M9vhBnF