I've started a new project. I'll be taking pictures every day, and posting them on my Flickr site. Most of the pictures will be taken with my Motorola RAZR, since that's what I have with me every day. It takes crappy pictures, so I will mainly be working on composition.
I like to impose arbitrary limits and then see what's possible within those limits. My all-time favorite camera is my Olympus OM-1. Fully manual, with built-in meter. No spot metering, no subject tracking auto-focus, but it will take pictures with a dead battery. I take it out occasionally and shoot a roll or two with just the 50mm. Forces you to work with your subject to get the framing just right.