A very rare bird. Think of a coelacanth (which were discovered alive a few decades ago, though despite being such a remarkable, unusual creature it may be endangered) or a Tasmanian Tiger (none discovered alive, though rumors persist).
It’s that unusual. What makes it such a great idea is that the original – a precursor of James Cameron’s “Terminator” – came out in 1973, and while it wasn’t terrible, it was limited somewhat by the technology available at the time.
What’s also good is that it’s (probably) not a sacred horse to too many people, and its main theme – technology running amok – is a common one, though the way the film goes about illustrating it is novel (essentially “Jurassic Park – also written by Michael Crichton! – with robots) which means that it should be relatively easy to bring it forward into current time.
J.J. Abrams is one of the parties behind the remake, and while I am not a huge fan of either his television series or movies, I don’t hate them either. There’s also the added bonus of it appearing on HBO, which means that there will (hopefully) be the violence and nudity only implied in the original film.
As long as it doesn’t make a mockery of the original film or series, like the AMC 2009 reboot of “The Prisoner,” then it should at least be worth watching.