Inspired by a project featured here on Hack-a-Day, [arthurb] bought himself a PIC 24F and started experimenting once he learned the ins and outs of programming the chip. Using a breadboard and a nest of wires was fine for his first few projects, but as he advanced, he began to feel the need for a full-fledged development board. With a list of required features in mind he got to work, constructing a well thought out board as well as a handful of expansion boards that can be used for various other projects. His main development board includes Ethernet connectivity for use with his web server software, the ability to utilize an SD card for storage, and a USB port for programming. His expansion boards include a temperature sensor, a numeric touchpad, as well as a video output module. Overall it is a pretty impressive build, considering he had never programmed a PIC before starting this project. All of his boards are thoroughly documented, and he has included plenty of source code in hopes of helping other individuals just starting out in PIC programming.
You can see his web server in action here, but keep in mind that it is running off a PIC, so please be courteous in your usage.