Favorite Position- all of em! Spin me like a top!
Most interesting place - I once had sex on a grade-school jungle gym while school was in. My boyfriend and I had cut out of collage and were smoking grass up there when we decided it was the time and place to de-flower him.
Also, I've done the bathroom sex in a crowded bar... We were in the lady's room and I was blowing my boyfriend, then he nailed me against the wall. What was really embarrassing is that we were in there for quite some time and a rather large line had formed to get in. The looks of all those people (not to mention all my friends) nearly killed us. WHAT A RUSH!
You can also count me in for the Mile-high club, and sex in the rain on a car. I'd really like to do it in a glass elevator at some point too.
