I just picked the D20 Prime Directive book (copyright 2005?) at a new game store i found.
It's so....uhm is "knock-off-ish" a word? I mean it's got a FED, Klingons, and phasers, but it doesn't really seem like a Trek game. But, after reading the posts above, I guess that's the point. This was one of my 'i have to have it' purchases. (that and my Army of Darkness RPG!)
Skimming it, it looks interesting. Once i dump the rediculous aliens that should help immensely. It is cool to see an actual Klingon EMPIRE, with conquered races and everything; I don't think I've seen that in any other RPG.
As I digest it I will post more.
_________________
"Yes, it's the Apocalypse alright. I always thought I'd have a hand in it"
Professor Farnsworth