My brother puts everything in his dishwasher without rinsing. And I mean without rinsing. Not a thing. He'll put a dish that contained dip in the dishwasher with a good amount of dip still coating the inside of the dish. He believes a dishwasher should do all the work.
I on the other hand rinse just about everything. My expectations of a dishwasher are that it thoroughly clean and sanitize my dishes, which is something I don't feel I can do (and really don't want to do) myself at the sink. But I'm not of the mind that massive amounts of food residue, etc. should go in the dishwasher, though I know the manufacturers' say the washers are made to handle it.
What do you expect from your dishwasher?