Wow, the good ol' days, reminds me of Captain Comic and Commander Keen...
Oh boy, I'm thinking back now and the line between DOS and Windows games is starting to blur in my mind. Keen leads me to Duke Nukem, then I drift to Wolfenstein and so on. Although perhaps my earliest DOS 'gaming' memories were all The Learning Company titles.
Then there are all the EA Sports franchises, which were DOS till around '96, though Madden was almost never released for PC back then. But I remember playing NHL 95 to death, and the original Need for Speed kept me busy too.