Can it really be 25 years since “On Golden Pond” (much of which was filmed on New Hampshire’s Big Squam Lake) touched our hearts on its way to winning three Academy Awards? Yes, and you can join the anniversary celebration this month at Plymouth State University. On September 22, the movie screens again. The next night the red carpet rolls out for guests to mingle with “On Golden Pond” playwright and screenwriter Ernest Thompson, director Mark Rydell, and composer Dave Grusin. Call 603-968-4494 or go to visitssquam.com for more information.