i've never liked Green Arrow until the recent Year One thing. just sayin'. handcuff arrows?
Oh, but aside from the stellar storytelling--O'Neill and Adams tackled things that comics at that time had steadfastly avoided, like racism and drug addiction--the Adams art was simply swell:
A couple of generations (at least) of graphic artists have been profoundly influenced by the man's style. Some of them have gone on to be influential, themselves (Bill Sienkiewicz, for example--who later teamed with Dennis O'Neill at Marvel to create Moon Knight and worked with Frank Miller on the Elektra: Assassin
limited series, along with a zillion or so other projects).
Say, I think Frank Miller was missing from that syllabus as well. I grow less and less impressed.Edit
: I, of course, am the Denim Arrow: