I'm a theoretical physicist, trying to collaborate with other scientists around the world. It helps to be able to write some maths sometimes, and usually we communicate via email. As such, I recently decided it was necessary to write a program that lets me embed LaTeX equations in an email, written in Outlook 2007, as images. I call it latex4outlook. I haven't found a good way to distribute it yet, but if you're interested in this functionality, please email me.