Favorite concert ever was seeing John Denver at the Greek Amphitheater. John, Mom, and I had cheap seats and were at the top with no one else around us (I guess everyone else was either richer than us or was willing to jump to an open seat lower down).
I sang at the top of my lungs, every word of every song (even though JD asked us to stick to the choruses).
(Note: H/T to Caroline for inspiring this post)