I wish there was more outdoor gear designed like this Lafuma "Eco" backpack. It's hemp plus recycled polyester, and designed with less fabric and fewer plastic bits. Plus, they don't have weird brightly colored panels like most packs. The color of the pack on Lafuma's site is pretty flash: mottled grey with red tabs.
The other pack I'm looking at is the Osprey Stratos 40, which has a bunch of straps for compression and gets universally awesome reviews. Also, I can go check this bag out in person at REI. If I were to get a new pack this spring (doubtful: I already have a pack), this would probably be the one.