I haven't cried in quite some time, until last saturday. I had a giant project due on Wednesday, and was coding and designing a website for it, and everything went wrong.
I broke down, cried like a baby in front of my computer for about ten solid minutes, got back to work, fixed it, and everything was fine after that.
I'm not an overly emotional person but that was probably the first time I've wept in over two years, and it was very cathartic and helped me deal with the stress in a healthy, productive way. I kind of wish I would do that more often.