Canon T2i Rebel (550) built-in mic vs Rode Videomic pro

I just recently picked up a Rode Videomic pro!
My biggest reason for using one is that the built in mic on the slrs don't work very well, especially for live music. And the built-in mic is mono.

You'll see, the audio in the first part of the video with the BUILT-IN mic (Talib Kweli @ Florida Room, Miami) is totally unusable. You can't even tell what the song is when the bass kicks in.