After bonding with Oprah during a sit-down interview on OWN, 50 Cent made another unexpected appearance. The hip-hop mogul was on QVC on Tuesday night hawking his SYNC and STREET headphones. He showed off their durability and bragged about the sound quality as his music played in the background. Viewers called in to speak with the rapper and cop a pair of the $250-plus headphones, which ended up selling out.