Yup, my little girl is always moving about. She's really sensitive to outside stimulation too. She'll often kick at any poking or pressure from the outside and I can always get to to move by shaking my belly around. My husband felt her at 22 weeks because she likes to kick at hands or pokes on my belly. Last night he rested his hand on my belly and she rolled over and kicked him 3 times. She also kicks like crazy if I roll over on my stomach too much at night... I told my midwives this at my last appointment and she proved me right by kicking the stethascope really hard over and over until it moved.
I don't remember my son being so sensitive to the world outside. I can't wait to find out what kind of personality she has!
Also, I have an anterior placenta, so she really must be kicking hard!