Tron (1982)

Continuity mistake: When the MCP informs Sark about Flynn, there's the part where Sark is leaning back with his hands off the console. Around where the MCP says "Acknowledge?" Sark's arms fall to his sides. The shot than cuts to a front view, and his arms are on the handle things. (01:02:04)

Ed Dillinger: What's the project you're working on?
Alan Bradley: Well, it's called Tron. It's a security program itself, actually. It monitors all contacts between our system and other systems. It finds anything going on that's not scheduled, it shuts it down. I sent you a memo on it.
Ed Dillinger: Part of the Master Control Program?
Alan Bradley: No, it'll run independently. It can watchdog the MCP as well.

Trivia: Shortly after the lightcycles escape from the arena, we cut to Sark who is staring in anger at a blue map. On the right hand side of the map is Pac Man, complete with animation and sounds from the old arcade game.