A game which despite being made in 1984, still works with correct timing on current machines! alas, up until XP it runs just fine, but Vista doesn't support fullscreen DOS apps anymore.
If you use Dosbox there are no troubles running games in fullscreen under Vista. Funny thing is that the Steam version of Doom 1 and 2 and Xcom are using Dosbox as well. Only needed to patch Xcom terror of the deep to get it working under Vista.