Woot tomorrow/today! I know I'll be watching it online, despite our IT department's anti-online-video stance... Worst case, I'll just go home early (4pm PST) and watch online.
I like Yahoo. Their site keeps things simple and clean (yes, hard to believe considering their home page), and things seem to load very fast. Plus their URL is simple, and makes sense.
I rarely use CBS, but I HATE the facebook popup that asks me if I want to share my tourney picks on facebook. I HATE HATE HATE it, so much that I'm going to suggest next year to do a different site (though, most likely I'll forget about it, and just keep hating the damn facebook popups)