Mac Menu Bar Theme

I have seen many screenshots (like the one below) of modified menu bars that have probably been made using some application. I like how you can change the WiFi icon to cell bars. And I have no idea how they got links to Macintosh HD, movies and TV shows on the desktop. Does anyone know what app that is?

And on the desktop, I have seen that some people have their iTunes album artwork and the song playing show on their desktops. I have many different commands, like the date and time, running on my desktop using Geektool. But I have never thought that geektool would be able to show the artwork though. Is there another app that lets you have this or is it also geektool?

Thanks everyone!