When a group of developers start meeting regularly for lunch, it's almost inevitable for them to create an app -- within days -- to answer a real question: What the heck should we eat today?
This happened to me on more than one occasion. Here's an old one from where I worked at long time ago: http://www.venarc.com/lunch/
I'm curious to see what other startups/groups have come up with. List your startup and a link to the lunch picker (if it's public).