Apart from podcasts, I don't really play any streaming media. Yet those of you who do will know how many tv and radio shows you can find out there. iMagneto is a free player and recorder which will play all your streaming media.
iMagneto lets you browse your media by type and features a stream filter box which, albeit a bit small, lets you search through your selected streams. You can also organize all of them in normal and smart groups.
The application features basic playback buttons and can record in four popular encoding formats, including iPod-ready MP4. Quality of playback totally depends on the stream however and you won't be able to view in full screen.
The only thing that annoyed me a little bit with this program however is having to install the videolan browser plugin (which doesn't come with the program) for it to play back any sort of media.
Apart from the plugin issue, iMagneto is a simple player and recorder with good organization features. And it's free!