Oh, I've pulled a lot of all-nighters. I love doing hackathons. I find myself most productive when I work on something in a single stretch. I have ADD that way. If I leave a project mid-way, that's probably the last time I'll be working on it; unless someone comes to me and reminds me about it.

Other than attending organized hackathons, I go on personal hackathons. When I'm in the mood to code something up in my free time, I just find some stupid, random idea to code and code it up overnight. (Oh, I have a very long list of projects that I can complete over the weekend)

Other times, I'll just be in the mood as I'm working on something and then lose track of time (and other bodily calls like hunger) as I finish it.

If my weekend looks very peaceful without any distractions, I put my hand in my project bowl and pull something up to finish it off over the weekend.