HHH is one of the all-time greats; you might want to check out Nitemare 3D - which is sort of like Wolfenstein 3D (just better) with Hugo in it! Made by David P Gray and everything, I could talk about that one a while (and I still haven't gotten the full version yet...)

Anyway, Classic DOS Games did an interview with the creator of those games, it's definitely worth a look.

Please share your impressions of the game upon playing it again!

...and remember, the games use the PC speaker for sound and music, so you'll be prepared to answer any questions from curious onlookers!