Carl Sagan and SETI@Home on a Space Stamp Series
I wonder when or if the US will commemortate Sagan on one of its own stamps?
http://www.espacelollini.com/intro/livredor/stvincent/serie3.php
It not every day that you see SETI commemorated on a stamp, either.
The series also commemorates past, present, and future deep space probes. It looks a little cheesy, but I have seen far worse and less accurate.