What rapper who's debut single was "Crank That", collaborated with The Pack?
The Pack (group):  The Pack has also collaborated with musicians such as Soulja Boy, Wiz Khalifa, and Taymoney20. Soulja Boy:  In September 2007, his debut single "Crank That (Soulja Boy)" peaked at number one on the U.S. "Billboard" Hot 100.
Soulja Boy