Attended Kepler announcement of the new planets. Later that day teachers who were actually teaching in my high school e-mailed me to tell me about the planets just discovered. I had to tell them I'd known about that for hours. I was there at the announcement by the scientists involved.
The most interesting thing I learned was that it is possible for very young students to wrap their heads around complex “higher level” science if they are motivated and engaged.
NITARP is the best professional development (PD) program I have participated in and I have participated in many PD programs.