(Review of both Book One and Book Two)
Got both of these anthologies from the library. Together, they're a great retrospective of Martin's career.
They're worth reading, for any Martin fan, even completists who've already read nearly everything in them, as Martin introduces and arranges the contents. His commentary on the stories is worth the price of admission alone.
It starts off with a hilarious (and, admittedly, hilariously bad) fantasy story first published in an independent fanzine when Martin was a teen... and quickly moves into his excellent sci-fi and horror stories, includes some TV scripts, and more recent short fiction. Nearly all of it is 5-star material, with, (in my opinion) the exception of the 'Wild Cards' material... but that's just me; I'm just not a fan of the superhero genre, even when it's well-done, socially relevant and gritty as hell. I just can't force myself to love it.
That's OK, though, because I love everything else here - and that's a lot to love - this collection is two big, thick books. Go read.