Enterprise is a perplexing series and this first series is rather a big let down. It was such a promising idea with some great characters and some potentially great storylines (the beginnings of Star Trek) and expectations were high. However, it was a major disappointment.
The first episode "Broken Bow" is probably one of the most action packed and entertaining pilots ever made for a television series, with excellent character and story developments. But, when we move on to the episodes that follow it seems as though the writers completely run out of steam and each one seems like a case of deja vu and just a generic copy of episodes from previous trek spinoffs. You also get the feeling as though the writers and producers have never even bothered watching star trek before, as blatantly obvious mistakes are made, which often completely contradict the other trek shows.
On a more positive note, the characters are really interesting and Scott Bakula is not a bad captain, however Jolene Blalock as T'Pol steals the show. It's even more interesting to see a star trek show without all of the technology that is normally relied on, as there are no holodecks, tractor beams or replicators, warp drive is slow and the weapons and technology available seem primitive. It's also great to see the first encounters with some of the famous and beloved star trek species such as the klingons, vulcans and ferengi, as well as the crews encouters with the andorians. Its clear to see that each episode has been given a high budget, as famous guests and top SFX / CGI are used throughout.
Overall, the show is quite good, but many episodes in season one let it down on a grand scale and just seem too similar to the last, after a while you start to get bored with the plots. For example, it seems that the same characters get kidnapped or imprisoned in each episode and too many shows involved with time travel. You sometimes feel that the show could have been spectacular, especially with all of the material that it could have potentially used being the prequel to all trek. It only seemed to do this in it's fourth season, but as we know, by then it was all too late.
One good piece of advice with this show is not to let your expectations be too high or try and compare it with the previous star trek incarnations. As a stand alone show (not counting the dud episodes) it's pretty good. However, without the pilot (broken bow), the andorian incident, shuttlepod one and shockwave (part 1) episodes, I would have to give the show a one or maybe two star rating.