A recent topic at Quora was What are the best video game levels ever made? There's a wide variety of choices, including the final level in Braid, Ocarina of Time's Water Temple and a level from Tie Fighter that immediately came to my mind.
You can watch the entire mission above — you start out flying an extremely fragile Tie Fighter on a seemingly straightforward mission, only to discover you're surrounded by traitors and have to survive long enough to be rescued.
If you didn't play the game when it originally came out, it probably looks laughably dated. But I bet any of you who played the game knew which mission I meant before you clicked through.