It's called First on Mars. Why is it called that? I don't know, but it calls itself 'Your personal guide to network tv on the web' and there are a lot of shows available here. From the About Us page:
First on Mars' mission is to help you find, organize and share network TV shows available for free streaming across the web. You tell us what you feel like watching by selecting networks, shows or TV moods (dark, sexy, intense). We use that info to build you a personalized guide to your favorites which you can filter and change to make your own. You can always add networks, shows and moods using the drop down menus, heart icons or browse feature. We also offer a choice of six looks for the site which you can select using the skins button. Enjoy and let us know what you think!You can browse through shows alphabetically or search by mood or by network. When you find shows you like, you can add them to your favorites so they're easy to find in the future. It looks like there are only a certain number of episodes available, probably whatever the network makes available, so you can't wait months to watch them, and it's not a good place to get caught up on a series you've never watched before, but to keep current with shows you like it looks great. First on Mars also lets you share shows with your friends and comment on the shows you watch.
I keep telling my husband that we don't need the satellite TV anymore - we could cancel that, watch everything online, and save a lot of money. So far he hasn't taken me up on that, but sites like this make it entirely feasible. And did I mention that First on Mars is FREE?