Find music that you'll like using MCE and pandora.com
If you haven't been to http://www.pandora.com go check it out. It's streaming music like an internet radio station but with a difference. Type in a song name or artist and it plays lots of similar music that you are likely to enjoy. The streaming audio is excellent quality and it's free.
To get this functionality in MCE 2005 I've created a simple addin that adds an item to the "More" menu. The "More" menu will be available in Albums view, Artists view and Song Details view. The artist or song name is sent to pandora.com to play similar music.

To install it, download these files :
more.xml [right click -> Save As] to C:\Windows\ehome\more.xml
pandora.gif [right click -> Save As] to C:\Windows\ehome\pandora.gif
Open a command prompt and run the following commands:
C:\>cd \Windows\ehome
C:\Windows\ehome\>RegisterMCEApp.exe /allusers more.xml
To uninstall
C:\Windows\ehome\>RegisterMCEApp.exe /u /allusers more.xml