The worst time for your oven to die is when you are making cinnamon buns.

Seriously.  You sift flour, combine dry ingredients, slowly stir in wet ingredients, knead the dough, roll it out, start mixing the filling (which smells wonderful even before it enters the oven), spread the filling on the dough, roll it, cut it, place it in a pan, put the pan in the oven, and open the oven twenty minutes later to find essentially a slightly drier version (but not any warmer) of what you originally put in the oven.  No fair.  The feelings of disappointment are compounded by a sense of paranoia since you were originally making cinnamon buns as a good way to end a long stressful day.  Now you spend the night considering the possibility that even your kitchen appliances are out to get you.

But, that was last week and we have a new oven now.  Hopefully this one doesn't hate me.