The Swamp Thing is one of my favorite characters (especially the era before Alan Moore's revamp of the character)--he had a pathos that few DC characters possessed.
I didn't care for his inks on JB's Superman run but his own <ahem> "adventures" with the character were very enjoyable. When he got to Power of Shazam he really found his place though. I think he is one of the few artists that can portray Captain Marvel "realistically" and get it right.
Your pinup even makes me want to re-read WildStar to see if I like it better the second time around.