I had heard terrible things, and was therefore...hesitant...to watch it until now.
I'm halfway through season one, so it could go downhill at any point...But it's actually really good. Phlox is fantastic. Trip is fantastic. Everyone seems to hate T'Pol's character, but she's fantastic. Archer is inconsistant, but he CAN BE fantastic.
The show, unlike all the star trek I've watched up until now, actually FEELS like it's set in space. The crew is in a tin can with experimental hardware that can fail at any time, and it really feels like it. These characters feel closer to astronauts, and i think that's important for the time period.
So far, there've been some interesting ideas...that one episode where we never learn the alien's motivations at all, "Dear Doctor", the fact that humanity is essentially at the recieving end of the Prime Directive...
Best part of all really is Phlox. He alone would make this show worth watching. Spock wanted to interact with humans as equals, Data wanted to be human, Odo wanted to be accepted by the humanoids...but it feels like Phlox views humans as bacteria in a petri dish. That's an AWESOME interpretation.
...really hoping this doesn't go drastically downhill. I have hope. I HAVE FAIIIIITH...FAITH OF THE HEAAAAAAART...