Saw Sunshine tonight on DVD.
The special effects are passable - after that things go downhill pretty damned fast indeed.
The plot is hackneyed, contrived, and easily predictable. The basic premise of the movie is ridiculous. The science is idiotic. The portrayed technology is retarded. The characters are cardboard cutouts. The camera work is nausea inducing. Apparently in the future nobody owns a light bulb, either that or they forgot to take the lens cap off during filming.
And worst of all? It's boring.
It's a lot like the directors of two other piece of shit movies, Event Horizon and Solaris, got together and had a bastard love child who came up with this turkey.
Don't bother. Really.