Yahoo! TV
Between Dec. 27 and Jan. 2, Yahoo! TV will be offering episodes of "Two and a Half Men" and "How I Met Your Mother" for free. Granted the latter show is not worth your time, the episodes of "Two and a Half Men" available are great. But beware, don't get hooked on Yahoo! TV as it is planned to compete with iTunes' video store. But take advantage of it while it lasts.
Yahoo! TV's video quality is fantastic, quite a leap over Yahoo!'s older video technology on Launch.com. The player looks a little big, but has very intuitive controls and the sound quality is fantastic, with none of the metallic chirpiness associated with streaming video content. Videos are a little dark, however, but I will note that that might be due to my computer's color settings.
These episodes are available commercial free.