Starman is probably John Carpenter's most commercially successful film, and it deserves the accolades. Jeff Bridges and Karen Allen give fantastic performances, and really that is the major draw of this film. This is a great film to introduce someone to science fiction, as it's a good story with endearing performances and is very light on "sci-fi" effects and such. The film could be downright silly in the wrong hands, as it's essentially E.T. for adults, the Jeff Bridges perfect performance and John Carpenter's sure direction make for a winner.
The blu-ray on the other hand is a disappointment. The only highlight is that you get the film enhanced for 16x9, as the previously available DVD was a chopped up pan & scan (I REFUSE to use the term "full screen", that term is criminally inaccurate as we are no longer in 1997). The picture is fairly soft and flat, but nothing horrible. I've seen worse, but I've seen better. On the bright side the transfer is fairly clean, and really, you aren't buying Starman as a reference quality disc anyway. Audio is fine, dialog is clear and the score is beautiful. There are no extras of any kind which is both hugely disappointing and mind boggling. Carpenter has commentaries available on most of his releases, and they are always entertaining, so I don't understand why there is not one recorded for his most commercially successful film. Disappointing.
To sum up, if you love the movie then this is an easy purchase, just remember that you are getting the movie and nothing else. Still recommended.