CW streaming full episodes
The CW is now streaming full episodes of select series on its site. Right now you can watch episodes of Everybody Hates Chris, Veronica Mars, One Tree Hill, Girlfriends, Beauty and the Geek, The Game, All of Us and Supernatural. As far as I can tell, it looks like episodes are added soon after they air on television, so there are no "sneak peeks," at least not yet.
Also, for you Mac users out there, the in-browser player should work just fine. According to the site's FAQ, the player will work in Firefox, too. I'm completely useless when it comes to technology, so if I'm wrong about that, share your complaints in the comments and we'll all break into The CW headquarters together and demand they scrap this player for a better one. Also, we'll snag Kristen Bell for this cloning project I've been working on.
I encourage y'all to also check out this list of sites where you can watch full-length episodes. Note that this is a list of legitimate sites, not torrents or sites like YouTube. Of course, if you use those methods, what do I care?