There are a couple of good streaming website for the iPod touch and iPhone. These videos can be played on the integrated Quick Time player built right into your iPod touch or downloaded with Safari DL-plugin if you've jailbroken.
Movies, Videos, and TV Shows
http://iphonemoviez.net/ - A very organized movie site that even has a search feature!
Shrumz.com-I really like this one. This website has dubbed Japanese anime like Naruto, Bleach, and One Piece. Although it looks like they are going to shut down.
Podcastusa.kiwipix.net/- Is a great podcast viewer. It has CNN, Cartoon Network, and some other American podcasts. There are some German podcasts there though.
iPhone Movies - An amazing site with streaming full length movies to watch directly on your iPod touch/iPhone.
http://i4iphones.info/index.php?/forum/23-movies/ - Full length movies posted by individual forum posters. Contains movies very quickly as they hit theaters.
http://i4iphones.info/index.php?/forum/55-hd-movies/ - Full length movies in HD!
http://naruto4psp.com-An anime download site. Naruto and Naruto Shippuuden both subbed in English. Just download them with safari download plug-in and watch with dTunes.
http://3click.tv/iphone/page.php - A nice TV show site but it requires a free account.
Surf the Channel - Stream full length television shows right onto your device.
http://iphone.spreety.com/ - Another streaming site for full length television shows.
http://m.abc.com - Stream ABC shows, requires that you are from the US.
http://m.nbc.com/fullepisodes.shtml - Stream NBC's current shows along with older NBC shows, requires that you are from the US.
Seeqpod-If you visit this site with your iPod touch and you search for music you will be able to play the music through your Quicktime player. It works by playable search. So instead of searching the page, going to the page and then listening to the music, you search and you get to play your music right there.
Flytunes- This site has video and music podcasts, videos and streaming radio!
iRippah- Download the top 100 songs direct from iTunes for free.
Also, if you're jailbroken, you can check out this page on how to watch full length movies for free.