I don't think that this show was ever going to win any awards. Still, I enjoy it enough to watch it whenever an episode is re-run on UK television (usually in the early mornings).
All of the episodes have the same, basic premise. Someone has travelled into the past and is changing time in ways which could catastrophically affect the present. Jack Logan (sometimes accompanied by fellow timecop Claire Hemmings) is sent back in time to defeat the bad guy. In doing so, he often has to deal with real historical characters, such as Al Capone, Jack The Ripper and Adolf Hitler !
I must admit that a big part of the show's appeal for me is the character of Claire, played by Cristi Conaway. Conaway has an old fashioned kind of beauty, like a pre-WWII film star, and I can't take my eyes off her when she's on screen. I especially enjoy the episodes where she travels back to the 20s or 30s and has to dress in the style of those decades.
Anyway, by no means is this a brilliant series but it is an enjoyable way to pass an hour.