I used to read a lot of SF as a kid, and recently got into Neal Stephensons work, which has reawakened my interest in the genre. However, if this is really a 'showcase' for the best SF can offer, I don't think I'll bother looking any further. Once you get through ignoring all of the editorials, overviews and 'appreciations' which take up about half of the book there are about twelve short stories, about two of which I'd say presented interesting new ideas. The rest are either damp little squibs of ghost stories (Travels With My Cats) Pastiches of Golden Age SF (Dry Bones, Embracing The New) or much-anthologised stories from the past which have been stuck in as a 'tribute' to the author (The Ship Who Sang) Disappointing, and as I've said has actually put me off investigating the field.