A very sick mash-up of Ratatat and Cypress Hill. It's done by a group Radio Vampiro, I couldn't find any information about this person, but he makes a good mash-up.
As for the vocals, never been a huge fan of cypress hill, but it compliments Ratatat nicely
Beat Beaty Bye Bye (Ratatat vs. Cypress Hill) - Radio Vampiro | Mediafire Download | Hulkshare Download
Ratatat vs Cypress hill – Beat Beaty Bye Bye (Radio Vampiro Mix)