Wolfenstein
Kommander Keen
The Adventures of Captain Comic
Doom
Scorched Earth
Duke Nukem
Kingdom of Kroz
Raptor: Call of the Shadows
I played Raptor: CotS within the last year, thanks to GOG.com. Doom I have played as well through Steam, but honestly it just doesn't hold the appeal for me it did when I was young.
I actually played Kommander Keen again this year, again from GOG.com.
Oh, and of course I have played Wolfenstein within the last month. So.... I guess your title is wrong!