I'm a huge fan of Sirens and Skys, his two solo albums on Hearts Of Space released back in the early 90's, and I wish he would have kept making music like that instead of going on to make soundtracks for obscure Canadian films. His releases with Tim Clement as Danna & Clement were great too. I have Summerland on CD and it's another personal favorite of mine. Sadly, much of their work is out of print at this point.
He was so good at blurring the line between cinematic music and ambient music, without getting too far into cheesy new age territory. I just wish he would have made more non-soundtrack music.