I was really liking Haven (based on the Colorado Kid). Watched several seasons until it had that "jumped the shark" feel creep in on me. It's one I could go back and try from the beginning in a couple years though.
I liked the first few seasons of Haven as well! Then it went into left field. For me..it started when the plots started to focus on the relationship between Audrey, Nathan and Duke. Then I started to realized that they really had no ending for this show...kind of like Lost and I cut my losses and stopped watching.
Side Rant: Lost is a touchy subject for me...LOL. I was literally mad, when I finished watching the last episode. All this time and energy invested in a show and that is how it ended! I won't say how it ended as some might not have seen the show, bu"t a warning.....it is disappointing as F***