I can't speak to his novels, as I haven't read them. But Martin's teleplays for Game of Thrones -- he wrote episodes 1x08 "The Pointy End," 2x09 "Blackwater," 3x07 "The Bear and the Maiden Fair," and 4x02 "The Lion and the Rose" -- are genuinely wonderful. For an example of Martin's skill in a teleplay, this video is a really good overview of how Martin is able to take a relatively simple scene full of exposition, and turn it into a compelling drama about how Joffrey, a teenage king, vies with and fails to gain power over his grandfather/prime minister, Tywin Lannister: He may go overboard in his novels, but when he's writing under the imposed constraints of a teleplay, George R.R. Martin is truly a master at building compelling drama. The first four seasons of Game of Thrones, when the series was based on the published books and Martin was an active co-producer and writer, are truly some of the greatest television ever produced. They are more than worth your time. The last four seasons, when Martin was no longer active with the show and they started to run out of published novels to hew to... eh. They're fine. Except for the penultimate episode.