Dissapointed:
Battlecruiser 3000AD (didn't have half the features is said it would, was lucky to be able to play it for five minutes, an insanely complicated user interface.)
SEIV: First time I jumped into it I thought it was horrendous, but I grew to love it....
SEIII: The first time I played it I couldn't figure out how it worked, thank god for persistence.
BOTF: Well duh
X-com Terror From the deep and beyond: All of them crap, at least Terror from the deep was playable.
ST: Armada: Decent, but boring campaign, week borg, and buggy as hell.
Everquest: Boring as hell, stupid gameplay, and annoying people.
Others, but I care not to list.
Games I liked:
Master Of Orion: Incredible game
Master Of Orion II: Even better then the first
Machine hunter: Sensless robotic violence, explosions to induce epeleptic seizures, and little to know story, how could you not like it??
HOMM I-III: Heroes of might and magic, great game, very different from anything I had played at the time.
X-Com: UFO Defense: Another reason why I love the bargain bin.
All Diablos: Evil slashing fun. Of course, the excessive clicking is kinda annoying.
Sim City II & III: Great games, unfortunately by III I had lost interest in city building
So many more, but not enuogh time to list them...