Comics historian Mark Evanier has a great story on his blog (http://www.newsfromme.com/archives/2009_11_15.html#018060) about a sketch Filipino artist Alfredo Alcala did, pro bono, for the San Diego Comic-Con in the seventies; and how this act paid off with good karma.
If you read a Marvel or DC comic during the late '70's and '80's, you likely saw Alcala's art, usually inking another artist, mainly because he turned out incredibly textured ink art incredibly fast. We got to speak with Alcala a few times before he passed away, due to a mutual friend, Phil Yeh. Our first wedding anniversary took place during the 1998 San Diego Comic-Con. Phil invited us to go out to dinner at Dick's Last Resort with him and a bunch of comics artists, including Alcala. At Phil's request, Alcala drew us an anniversary present -- a beautiful drawing of a panther. It was a wonderful link to the SAVAGE SWORD OF CONAN issues inked by Alcala that I had so enjoyed as a teen.