http://weightweenies.starbike.com/li...es&sortby=real
Panaracer makes the Pasela Tourguard (TG) in a 26x1.5 and 1.75 size. The Pasela TG series are pretty light and have good road feel. They're not as puncture resistant as the Schwalbes, Armadillos, etc, etc, though.
http://www.panaracer.com/eng/products/index_ur.html#c