In the interest of dredging up a list of interesting/entertaining/useful programs, what program were you most impressed by?
Mine is probably fr-08 by Farbrausch (http://www.scene.org/file.php?file=/parties/2000/theparty00/in64/fr08_final.zip&fileinfo). I had never seen such tight use of bytes that impressed me as much before or since.
Add to list?