There are multiple places you can try. First, I would recommend checking the show or network site. Many networks put episodes on there. You could also try www.hulu.com. Hulu has ads, but far less than standard TV. Another option that you can try is tv.blinkx.com. This site doesn't let you watch shows onsite, but rather links to places that you can. Good luck, and make sure you check the legality on sites without ads, downloads, surveys, etc..