Sometimes that big Thanksgiving turkey. No prob w roasting a chicken, but the larger the bird, more cooking time involved, buttering, basting & flipping the thing over - then trying to get a bizillion side dishes to all come to the table at the same time. A little tricky.
Souffles & baking at high altitudes. Love making souffles. Tried making one in a high altitude location, & it would not puff/rise correctly. Don't know how to adjust recipes for high altitudes.
My dream kitchen (saw one on HGTV), had two ovens & a pizza oven... then I could roast a turkey in one, make a souffle or bake in another, & make pizza all at the same time. (And, there were two dishwashers ;-) )