They're not as interesting as you'd think.
Most of the time I dream of past events I need to learn something from, or future events I need to be forewarned about. But it's all real life, no one is anything different from what I see in my daily routine. :P
I would pay a month's worth of these dreams to have just one night where I can talk to other spirits, or perhaps take the form of one of my theriotypes... I've talked to other spirits a few times, but not nearly enough.