in reply to My first memorable Perl project was:
It was a port of a C++ FLTK based class project: Battleship
While learning Perl and Tk, I decided to port that game. Needless to say the Perl/Tk version turned out pretty darn good, minus the sound effects I had in the C++ version.
After selecting One of Two players, you used a coordinate selector widget to place your ships. It included "mini map" to give you an idea of the ship placement. I even added an "Auto Pick" button for the lazy perl hacker I was turning into. The rest was just a basic grid of buttons to battle on.
So, not a major-work-project-difference-maker, but it was still a very fun learning experience.