I quite like the idea of a 'context' file that lists what you were doing when you stopped. I tend to check in code that's broken on purpose with a message: "B

I quite like the idea of a 'context' file that lists what you were doing when you stopped. I tend to check in code that's broken on purpose with a message: "BROKEN... " and then roughly where the project was. Also, I tend to check in code with links in the comments to anything I was using so that I can find the links again.