Never had visual or auditory hallucinations (except when I have a high fever, and THAT gets very interesting), but I do have some paranoia, which gets pretty bad during a depressive episode. Normally I just fret if a car follows me for more than a few miles, but when I'm depressed I'll start believing that people are avoiding me, talking about me behind my back and so on.

By contrast, when I'm hypomanic I don't give a crap WHAT people are doing or thinking, except when they get in my way.