An article in UVaToday describes this year's annual National Physics Day Show, which was held on April 26.  From the article:

“It’s a demo show designed to educate and entertain kids and the grownups who bring them,” said [Prof. Cass] Sackett, who hosts this year’s event. “We carry the torch, year to year, in an effort to foster enthusiasm and excitement for our science by making it accessible. We pass that torch to each generation. Developing scientific literacy is good for society.”

View the article here:

https://www.news.virginia.edu/content/uva-invents-national-physics-day-anew-each-year

and view video from this and previous years here:

http://www.phys.virginia.edu/Announcements/PhysicsDay/videos/