Just wanted to add my voice to the chorus. I literally purchased my first Apple product a couple of months ago with great skepticism; I am a frequent critic of iTunes, and Apple products in general. I always viewed Steve Jobs as someone who I admired for his success and vision, but no more than any other notable figure in the field. But I feel a poignant melancholy at the news... when I saw someone's comment pointing out that the filename for the image on Apple.com was "t_hero.png", I found myself almost moved to tears.
Perhaps you really do never understand the gravity of losing something until you lose it.