Solar Power

I've been reading about solar panels and trying to get an idea for how easy or effective it might be to install them on our roof:
http://www.solarexpert.com/pvtypes.html - Explains the way different solar collecting systems work in basic terms.
http://www.newenergy.org/sesci/publications/pamphlets/photovoltaic.html - Another simple explanation of how solar power works.
If you saw the movie Who Killed the Electric Car?, then you probably fell in love with Stanford R. Ovshinsky. His company, Uni-Solar, makes the coolest solar products for your roof! http://www.uni-solar.com/interior.asp?id=102 Check out the solar shingles, and the peel-and-stick laminates! If you haven't seen Who Killed the Electric Car? yet please do! It's guaranteed to amaze you.
http://www.solarforhouses.com/content/products/Default.aspx?t=solar - Here is a company local to us who could provide us with exactly what I'm envisioning! Whether it would be affordable remains to be seen.