As much as I loved The Wolf Among Us, my favorite has to be season 1 of The Walking Dead. It was the first time I can remember being emotionally overtaken by a game. Episode 3 should have been named “Get Ready To Cry,” because when I had to chose between killing [REDACTED] and [REDACTED], it left me bawling at my keyboard like a little baby.
It's definitely The Wolf Among Us. I loved the murder mystery setting, and it's the only Telltale series I wanted to play more than once. I have Tales from the Borderlands, but I've been told not to play it until I've played Borderlands 2, which I haven't done yet.
Of recent games I only ever played through The Walking Dead, so that defaults to my favorite. Sam & Max was also great, though (remember that?).
I admittedly haven't played a lot of Telltale games but from among the ones I have played, Tales from the Borderlands easily comes out on top. I never got into the Borderlands series but Tales actually made me care about the characters. I truly enjoyed each episode and hope to see more!