My 'favorite' Siri 'feature' is when I ask for directions to 'home' it gives me directions to the local Home Depot.... really???
EDIT: After thinking about this for a while, the reason this irks me is that 'directions to home' is one of the most basic asks. I am not asking Siri to play some obscure unreleased track from an underground British punk band. I am asking for directions to my home, and it fails.