TRON: Legacy is something of a high school reunion: everything you vaguely remember you can now revisit with a new event that's updated, dated, and the same all at once (Jeff bridges, especially). If you want to see how neon-lined things/that girl you had crush on look a few decades later, go for it. They look surprisingly alright, actually. And if you don't want to go, that's fine, too. You're just missing exactly what you'd think you're missing. It's your couple of hours and a plane/movie ticket. Whatevs.