For just riffs, which I'm usually super down with and have no problems with in my head unless noted:

Sugar coated sour by Dillonger Escape Plan which can be really distracting cause it's really complicated

Funeralopolis by Electric Wizard cause Bwoooooom bwoooom bah duddah duh duddah day bwooooom bwooom bwoom

Twilight Amaranthine by Asunder which is both of the above at the same time.

Sunny Afternoon by the Kinks

Pick a discharge song

I'm more prone to riff madness and that leads to songs I like more cause sick riffs are the best part of music.