So far, I'm enjoying Alcatraz. Sam Neil and Parminder Nagra are a joy to watch, for one.
Little worried by the IMDB entry, though:
http://www.imdb.com/title/tt1728102/ (2 eps, really?)
I admit, at first I was worried this would turn into a clone of The 4400...but they seem to be going in a different direction.
(though one scene had me wondering if it would have a Brimstone-type angle...we shall see, but I doubt it)