I don't know that there's anything interesting I could say about what he did, but I think it's worth looking into the specific focus of his ire, which was the emerging field of cybernetics. The Net - The Unabomber, LSD and the Internet is a great documentary that explores the historical forces that led to the creation of the Unabomber. Cybernetics is a recurring theme in Adam Curtis' work as well, and the second part of his film series All Watched Over by Machines of Loving Grace is worth checking out as well. Looking back from this point in history, I think it's safe to say that Kaczynski had some incredible foresight.

I'll try and keep the tinfoil hat off of my head, but I think it's worth mentioning that he was almost certainly a subject of the CIA's MKUltra mind control program. This is likely an important part of his story, but when we venture into these topics it's impossible to distinguish the signal from the noise.