I like this show, but it was always a just a fun hour to watch (Loved the sometimes witty dialogue). I'd never watch any episode more than once. You don't connect with the characters, just enough to go through the episode.
In the second season I think the female additions to the show messed up the dynamics of the show a bit, especially Ames (most of the times the writes don't seem to know what to do with her) and Ilsa is only slightly better ( but it's applied only to her blending in, otherwise she is bit annoying) Many episodes could be taken as examples of istances where their abscence wouldn't make a difference. The thing between Chance and Ilsa? so much lacking in the URST department... couldn't care less (and it's way too obvious, or better said, artificial).
Having said that, I've enjoyed this show (accepting for what it was), but it's not like I'd reccomend it as a show you can't miss.