I've been going through this playlist of Japanese orchestral concerts of video game music from the late 90s (the concerts, rather than the music). Some of the best orchestration of game music I've heard.
Which reminds me: Classic FM started their new video game show, High Score, the Saturday before last, and it's been pretty disappointing so far. The first episode was about BAFTA nominated scores, so was just an hour of pretty dreary, largely ethereal indie darling stuff and even ended on the host's own work (from Everybody's Gone To The Rapture), which is a pretty self-indulgent thing to do at any point, let alone in your first episode. The second was themed on heroes and was marginally better, but still seemingly reluctant to go for many of the big, well known pieces.