I have no advice about the other stuff, but it sounds to me like the lightning came in over the phone line. All the things that you list as being dead were attached to the phone line, all of them directly, other than the Mac, which you say might actually be working properly, and even if it's not, it's only a couple of hops away, the router, again, a scant hop away, and the receiver, which could have easily gotten a surge from the TiVo. The telephones, security system, and TiVo are all directly attached to the phone line, obviously. (I once got a strike this way when the phone company was doing some work and some of the phone lines on the poles outside were nearly dragging the ground.)

Did you run the phone line and ethernet through the surge suppressors? I bet that's the first thing that Monster will ask when you try to make a claim.

Seems to me that this is yet another reason to drop LEC service for VoIP.