All the major networks do (except Discovery, and I rue them for it). I often watch shows I am interested in on the web now, instead of on their timetable. I think the last major network show that I didn't find hosted at their own website was American Idol, and for good reason
Amazingly, even though the download link was ready for The Good Wife right before air, I went ahead and watched it on TV. So weird, as I'm like you, I've switched to online watching only, with my laptop ready to be docked to my tv and sound system for big viewing of anything on the laptop in the living room. It was neat to have breaks in between the show, these things called 'commercials' I forgot about lol, it allowed me to check Bitcointalk before hearing the show was back on in the other room.
I still prefer just having shows running non stop on a laptop next to me and I just work and do things around that then it be the focus, but it was very retro to watch a tv show with commercials again. I feel a shift in the way media is distributed is going to be forced sooner than later, I have already got two friends to purchase TB external hard drives to watch shows off of. It isn't hard to convince them of
commercial free, when you want, just plug it in your PS3 or 360.