Films about the U.S Counterculture of the 1960s?

Forest Gump is barely in it. Strawberry Statement avoids the reasons for the Columbia rebellion, although based on a book by an insider. Woodstock is nice. Ice is impossible to find but one of the best for the politics. Manson is about a sicko, and not to be taken as representative, Easy Rider also is pretty good for some aspects. Alice's Restaurant is one of my favorites.