I'm under orders to record the good times, so here we go!
Late nights in lab are best fuelled by dark chocolate and full meals. Now that my evenings aren't otherwise promised, I've been staying over at lab, and I find that those are my most productive hours at the bench! especially if I plan twice the number of things to do during the day than I actually can do.
Plus, I had dinner and chocolate dipped strawberries delivered at my labstep by driver-boy.. now that is luxury :)