My current desktop running OS X Yosemite 10.10.2 Seed something something
I recently had a Star Wars marathon going through 1-6 so I'm in a "space mood" lately.
Note about wallpaper: The version I use of this has been edited by my self to remove the watermark and is in 1680x1050 which is MacBook Pro Retina 13" largest scaled resolution. There is no need to get a upscaled 2560x1440 because it will just be bloated and pixelated anyways but you can go ahead and get it from the website.
Wallpaper:
My version - https://www.dropbox.com/s/h6oxgu5vz27jhrz/Space.png?dl=0
Website Version (with watermark) - http://wallpaperswide.com/space_fantasy_2-wallpapers.html
Menubar song app: Emcee (MAS)
And thats about it
Now that we are in 2015, I'm already looking forward to WWDC 2015 even if it's 5 months left
They will keep building upon Yosemite's facelift which is good because just like when they redesigned iOS, it was buggy, laggy and iOS 8 turned out better so lets hope for the same with OS X 10.11
Whats the app in your dock that has the movie popcorn icon? Some sort of media center app???