When I was still in school I was inspired by the works of Johnny Chung Lee. He released a series of applications that allowed you to use the Wiimote in conjunction with a PC. Feeling inspired, I did some research and found an input emulator that worked with the Wiimote. I wrote a script that allowed someone to control the mouse of a PC and trigger pre-programmed hot-keys and an application menu. The software was buggy and very difficult to teach to new users. It was successfully used in an in-class presentation.
Shortly after graduating I became interested in Linux and put together a home LAMP web server. Through that experience I found an iPhone application that allowed me to remote into it using SSH and a Dynamic DNS provider. The same app supported VNC connections. I have since used VNC to provide remote desktop support for clients as well as friends and family. I did this using my main computer but was also able to use my phone in a pinch. I have used this method to play a few rounds of Starcraft from my phone as well (using 8bit colors & compression).
In 2007 I worked as an Archery Director at a boy scout camp. They received a large donation of newer computers and they needed someone to recycle their old computer lab. The computers were mostly Pentium IIs and IIIs with about a dozen old crt monitors. I hired a staffer with a pickup truck and we packed it from Mount Vernon to Bellingham. When I was done picking through the scraps I had a small LAN of 8 computers. Four in the living room and four on the other side of the wall in the bedroom. We played the original Starcraft, Warcraft 2, Quake 2, X-wing vs. Tie Fighter, and a few other old school games. Much fun was had by all.