I agree with everyone about recycled, and the used parts bins are nice. R+E cycles near cowen park is great too. they are definitely more pricey but everybody there seems to be genuinely interested in helping you out. I live down near that end of the ave, so I've had them order parts for me before (VERY fast service).

they also seem to have events sometimes... I think there was fat tire beer sampling and hotdogs once? I drool over the rodriguez track build they have in the window whenever I go by.