After enjoying Populous, I am considering getting Dungeon Keeper 1 or 2 or both. Tell me your thoughts on these 2 games. Would you recommend them?

Absolutely recommend both! They have loads of character and the gameplay is superb. The graphics in the second are much improved with 3D models for the creatures, but I feel like the original is somewhat grander in a lot of ways, you had more freedom and such. Can't go wrong with either, or preferably both!