Memory Alpha

I've been spending a lot of time lately navigating Memory Alpha, the definitive Star Trek wiki. Its what the Star Trek Encyclopedia would have been if it was the Hitchhiker's Guide to the Galaxy.

Also of interest is the Non-Canon Star Trek Wiki, covering the books and comics which canonically don't exist.

Wikipedia covers Memory Alpha and its drawbacks, strengths, and controversies.

Other relevent wikis are the Great Machine Babylon 5 Wiki, Unclyclopedia, the Wikipedia parody site, and Wookiepedia, the Star Wars Wiki.

Update, 11:11am: I also should mention that I have added the first theme to Deep Space Nine to the "star trek themes" post