If you like somebody's work — just go and see them. However, don't ask for their autograph. A lot of people came and asked me for my autograph — and it's creepy. What I did is read everything they published first... and correct them. That's what they really want. Every smart person wants to be corrected, not admired.
In "The Society of Mind" MIT course, part 6, "Layers of Mental Activities" (25:40 -- 26:15). Fall 2011.