The 4400 is a show I stumbled across on Netflix when I needed a good TV series to get stuck into and it's a series I highly recommend. It does take a maybe the whole of season 1 (only six episodes long) to get into the show however, its worth sticking with it. Seasons 2-4 are really good. The show is well acted, well written and as everyone had already mentioned, thought-provoking. The end of season 4 seems a bit rushed and I think they could've pushed a fifth season out personally before cancelling the show. Anyway, worth the watch!!