Starflight - Episode 1 - Introducing The Classic
Starflight is a pioneering early game in the space exploration genre which set standards for combining storytelling with procedural content - all back in 1986. I've been wanting to play through this game forever because it combines spaceships, retro gaming and many opportunities to use silly voices for the aliens.
You can buy a copy from GOG http://www.gog.com/game/starflight_1_2