There have been very few Colonial period pieces made in the last 25-years. Amistad (coincidentally also by Spieldburg, I think) comes to mind immediately, but nothing really directly about the FFs as a feature fil. Of course, you did have the disappointing HBO miniseries based on McCullough's bio of Adams.
It (the Revolution) is such rich high-drama material, I don't know why it's not mined more frequently for screenplays, but it isn't.
I enjoyed Mel Gibson's "The Patriot" although it took some liberties with the historical record and acknowledged being only loosely based on the Francis Marion story. I'd love to see a movie about Ethan Allen and the Green Mountain Boys.