Front Row provides the best video podcast viewing experience using iTunes 6.0 or later. If you're having trouble watching video podcasts, see "Video podcasts play audio but don't show video" to make sure that you're using the right menu choice.
If you are using the correct menu option but still can't see video podcasts, you may have iTunes 5.0.1 or earlier installed on your computer. To play video podcasts, be sure to download iTunes 6 or later (it's free!).