Currently on my list of active games I have:
Robin of Sherlock (Spectrum 48K)
Wizardry II (PC - original copy on 5.25" 320K discs, still works perfectly on my K6-2/380!)
Dungeon Master (Amiga 500)
I dip into other games but they're the ones I play most at the moment when I get chance! I have them all set up (along with a Sam 440ep and an A4000 PPC) in the corner of the living room so I can play them while the wife plays Warhawk or whatever.