Best DOS Games

Master of Orion (greatest galaxy conquering game of all time)

Doom

Duke Nukem

Stunt Island ("You have a broken leg... a twisted spine... a ruptured disc... and a pimple. We'll have you all patched up and ready to go... tomorrow!")

Megaman

Descent


Those are the main ones I can remember, plus a few more that I can remember images, but not names.

Falcon 3.0 was the bomb

Great flight sim, great combat sim. I used to spend hours setting up the perfect sortie.

Going way back, Gato, a subsim. Played on an IBM jr.
It was all line art and cheesy PC speaker sounds, but I loved it.