I miss the 9-pin joystick ports more than the parallel ports. I hooked a photocell to the paddle pins on one and had a huge amount of fun. I remember Be had a huge port on the BeBox for hacking.
It was called the geek port. I never had one but read a ton about them back in the late 90s. I was a true BeOS fanboy back then and tried my hardest to run it as my primary OS. I usually ended up back in Windows 2k sadly.