it covers ALL the Star Trek eras,from Enterprise,the original series,next generation,and has the voice overs by the Captains.Look at the Ultimate Universe thread,they are about to release a mod that will change the game and make it alot closer to what it was meant to be.It'll be released in 3 phases.There's also more mods already out or being worked on.I have been inviting all the modders from the Star Trek community to come here.
The Ultimate Universe mod seems to be the biggest and most antisapated of these,and they have been kind enough to start keeping us in the loop.The first phase will be released this week-end!be sure to check it out.While it does have it's faults I am having a blast with it,and once this UU mod is released I plan on having even more.
Look over the UU mod thread and you'll get an idea about how it looks.