ABC: http://abc.go.com/player
Available shows include Lost season 1 to 3 in “streaming HD,” Pushing Daisies, Grey’s Anatomy, and Ugly Betty. I watched an episode of Grey’s Anatomy. It started with a ten-second Cannon camera commercial, and then it STOPPED. I had to "click to continue." It also kept the logo of my local ABC affiliate at the top of the stream. It seemed to be a 148 KBs stream. The player refused to go full screen on my PC, but selecting “Big” got me a 420 x 300 viewing window. I also tried the HD showcase. Alas, my DSL couldn’t keep up. They do suggest that you have a 2MBs connection or faster and a high-end graphics card to view the 1280p stream. Selecting another episode crashed Firefox, but it restored correctly at restart. The ABC player is Flash based.
Update: When I came back to refresh this list, I found that "ABC.COM HAS A NEW FULL EPISODE PLAYER." (Their caps, not mine.) Clicking "Launch" launched a pop-up window that informed me, "ABC uses a plug-in you don't currently have. In order to fully experience the stunning video quality, you will need to complete a quick installation." Before this screen can be passed, one has to check-mark, "I have reviewed and understood all 12 paragraphs of the End User License Agreement and agree to be bound by them."
I actually read the entire EULA so you don't have to (unless you want to). It basically says that we are Disney and we own everything. Using our software doesn't make you own anything, and we can pull the plug any time we want. Furthermore, it may not work at all, and you can't blame us for that.
It also links to a separate page for the privacy policy, where I learn that Disney calls me a "guest." The first entry under what types of information they collect is "Information that you provide." This is usually enough to make me enter stealth mode, but I clicked "I agree." Then the next page said, "Why do I need to install something?" Firefox said it "prevented this site (fep.abc.go.com) from asking you to install software on your computer." (It's nice to be looked out for.) When I clicked "Allow," the link went to movenetworks.com. This is good news because the technology works great for Fox.com, and it should work great for ABC/Disney, too.
Then it said, "Restart Firefox to install the plug-in." Right. I'm actually typing this update in from . . . Firefox! (Sigh.)