 Archuleta 's acting debut was when he appeared as himself on Nickelodeon 's show iCarly , in " iRocked the Vote " . The episode aired February 7 , 2009 . He made a special guest appearance in Season 3 of the Disney Channel show Hannah Montana in the episode " Promma Mia " as himself , and he sang a duet ( " I Wanna Know You " ) with Miley Cyrus , who played the title character . The song was featured on the soundtrack Hannah Montana 3 and also appeared later on the compilation Best of Hannah Montana . 
