Youtube as an Internet radio/video station? Try it full screen.

I generally prefer music on Youtube than any other source. But returning to the screen to choose every tune is a chore. These solutions are mashups of last.fm and youtube. More on this topic by Rocketsurgeon

This is my favourite, simple to operate, it just works! http://tv.timbormans.com/  

1. My favourites at LAST.FM Sitivi’s top artists channel | Last.fm + YouTube = music tv goodness
2. Rolling Stones’s similar artists channel | Last.fm + YouTube = music tv goodness
   
3. Beatles’s similar artists channel | Last.fm + YouTube = music tv goodness
   
4. like joni+Mitchell 
   
5. Arabic’s similar artists channel | Last.fm + YouTube = music tv goodness
   
6. George Harrisson’s similar artists channel | Last.fm + YouTube = music tv goodness
   
7. Debussy and other calm music
   
8. Satie’s similar artists channel

Last.tv  I'm evaluating.

This one is said to be great, but I can't make it run:

LastTube: Last.fm Meets Youtube .::. beta .::. v 0.1.... by dersteppenwolf

If you don't have one, create a free last.fm account at Last.fm - the largest music catalogue online

This one is interesting but runs on mouse clicks; too bad. John Lennon - I Love Music Video