Great for 8+
This is one of the best Star Wars movies. It's okay for 8+ in most parts, with less Stormtrooper-blasting then its prequel, but there are three violent scenes that are worse than others: a brief closeup of Han using Luke's lightsaber to cut the guts out of a Taun-Taun; a scene (admittedly, a dream) where Darth Vader is beheaded by Luke, although bloodlessly; and in the final battle (SPOILER) Darth Vader uses his laser blade to slice Luke's hand off of his arm. There is some kissing, but otherwise, besides one brief h-word, it's okay for kids. It's a fun movie with plenty of action.
What other families should know
Too much violence
Too much sex
Too much swearing