I worked closely with him at Progeny, and I've long admired Apple and Steve Jobs. Both deaths hit me pretty hard.

Ian reminded me a bit of Steve; he had a similar ability to look a few steps ahead, anticipate technology trends, and he was quite charismatic.

Orthogonal to the above: I remember when Ian first got an iPod and started downloading music from iTunes. He was astonished at the convenience. "How has no one done this before?" is nearly an exact quote.