Line 6 has some interesting demos of gear over at
http://www.ustream.tv/channel/line-6-live
Have a look. These are live shows, but they are also recorded so you can view them anytime later.
The last one was about Digital Wireless gear.
The Law of Gravity is nonsense. No such law exists. If I think I float, and you think I float, then it happens.
Master Guitar Academy - I also teach via SKYPE.