My brother's 16 and 1/2 and still growing. I reckon he's got at least another 2/3 inches to go.
Most of my male friends I knew from school had a big growth spurt once we'd gone to college and also shot up a couple of inches.
I grew around 10 inches between 14 and 16, and was told that I would stop there. However I kept experiencing growth spurts all the way up to 21, and I'm now a fairly healthy 6'5"!