I am basing my opinion here on only the first season trilogy so far, but if my opinion radically changes after watching more episodes, I can always come back here and edit.
I like Jack Taylor so far, the character and the program. This is a feat as I am not usually drawn to shows that draw a lot from organized crime or conspiracies that reach into political or law enforcement ranks. But Mr. Taylor is interesting enough to have me rooting for him. He is tough and smart, as you would expect, with a caustic wit and a soft heart, though it is well-hidden a lot of the time.