Other, as usual. Wholololo!!!
My top spot goes to Panzer General II (Panzer General IIID in Germany), a great wargame where you try to conquer the World for Germany, the Allied campaigns in Europe and North Africa from 1941 on or try averting the fall of the Reich after the defeat at Stalingrad, including some ahistorical battles (Invasion of the UK and a landing in Savannah in the US for instance).
Number 2 goes to Imperium Galactica, as pretty unusual 4X game in that it is real-time, you gain higher ranks and thus more possibilities over the time of the story, which also affect the size of the map you can see and act upon, and so on. Hard to play these days as the space battles go way too fast on modern CPUs.
Third spot goes to Dungeon Keeper. A great take on the RTS genre, and the announcer is superbly hammy - and even better in German, surprisingly enough.
Number 4 goes to Diablo. Stay a while and listen to the Butcher calling you fresh meat or read my entry to the game in the previous year's post ^^
Finally for the fifth entry, I elect Tekken 3, probably the best Tekken ever made and Tekken Ball was always a Blast with friends.