I average about seven, and I dream very vividly, with the senses of touch and smell intact. I have lots of Disneyworld 'nightmares' when I'm planning a trip, such as finding myself on the last day of my trip without having gotten to any of the parks, or trying to get to WDW by walking and it's endless and I can't remember where it is. (I'm a little nuts, so I could be forgiven those)
An average night of sleep is 7 1/2 hours for me. I don't dream often (that I can remember) but I do experience sleep paralysis on an almost weekly basis. It's downright terrifying because I'm in that state of almost fully awake yet I can't move a single centimeter of my body. I feel like I'm watching from above as I struggle to move.. creepy!