I thought Enterprise was great from day 1. Yes, it had weaker episodes during the first 2 seasons, the third season is really good in my opinion, and the 4th season is just fan service, which some people apparently like. The character dynamic was the best since TOS. The acting was fine except for Jolene - most of the time she looks and sounds like she is desperately trying not to start laughing. I thought the show was a huge improvement after Voyager, a show filled with boring characters and technobabble.