We all wanna do wheelies. They make riding easier... if you don't have to whack your front wheel into an obstacle, but can instead float it over, you're so much faster and smoother. Plus, you look rad as heck!
This video focuses on body position for standing while lifting the front wheel off the ground.
Check out Wheelie Level 1 Tutorial first, where I focus in on what to do with your controls to get the 'clutch pop' and timing locked and then move onto this one; Level Two Wheelies - Standing.