It's soooo hard to pick a few favorites! I love Aquarius (Twyla Tharp's choreography is amazing!!), but I also really like I Got Life when he dances on the table. Hair is a great number too. I remember my parents playing that song on a tape when I was younger, and I was thrilled when they started singing it in the movie. Another great moment is when Berger is marching onto the plane at the end. But I agree with your favorite song choices!
I love the Hair film!! I haven't been able to see the stage version though. I believe it's being staged by the Public Theatre in New York until August 31, starring Jonathan Groff as Claude! Wish I could see it! Guess I'll just have to stick with the film version.