I play in a couple of 5v5 rec leagues these days. Some teams are more competitive than others, but it's some good basketball here in Indy.
I'm 6'7" and played in high school and also my freshman year of college before I broke my foot, transferred to a D2 school where the coach was a prick, and subsequently gave up playing college ball.
In high school I could dunk but it wasn't always the prettiest. I never dunked in a high school game though. The summer after high school, I could dunk with my eyes closed! Not sure if I got stronger or since I had stopped growing, my body finally caught up with me. I had numerous dunks in games. Nowadays, I'm back to where I can dunk but it isn't always pretty! Granted, it's been 12 years and I'm probably 40-50 pounds heavier than I was then!
I used to be a post player in high school and college, but I've found myself moving out towards the 3 point line as I get older and wiser!! I shoot pretty good though from behind the arc so it pisses other teams off when a 6'7" guy is raining 3's on them!! It's pretty tough to guard!