Forrest Gump: Momma always said, life was like a box of chocolates. You never know what you're gonna get.
Jenny shows Forrest a clipping of him in U.S.A Today (first published in September 1982), but on Jenny's grave it says she died on March 22 1982.
The lake behind the Gump house in Alabama is the same lake the Forrest rests his buddies at when he rescues them in Vietnam. Arguably a mistake, but it's not noticeably the same lake - just interesting to know.