Back in the day, FASA released the Star Trek: Starship Tactical Combat Simulator, a wargame depicting ship-to-ship combat in the Star Trek universe. Cataptromancer owned a copy, which I coveted purely for the cool counters. As it happens, it seems to have been a decent, if record-intensive game.
Fortunately, Jason Robinson has converted ST:STCS into a free, downloadable computer game. Now, all the calculations are done "under the hood," leaving you to allocate power and then maneuver your ship and fire your weapons. It's a sweet little game, even if I can't manage to beat an L42B with a Chandley.
It should not shock anyone I know that a computer game that appeals to me is a port of a board game.