I've been seeing this article getting spammed around lately. It includes a list of youtube videos where popular pop songs have had their drum tracks isolated, some with greater success than others. Anyone who wishes to actually use these tracks in their favorite DAW would have to go through the effort of retrieving the audio from the videos; preferably in the highest quality format. Using the command-line python project, youtube-dl, I've already done this for you. The audio has been extracted from the HD versions of the videos, and converted to 44.1k 16bit WAV files. I've also normalized them a bit.