Further thought re: Walk The Line; when we see additional characters such as Jerry Lee Lewis, Elvis Presley etc, represented in a fictional way, do we see them as impersonations of Dennis Quaid, Kurt Russell, etc? Simulacrum City.
Also, overheard at The Brits: "Stop giving James Blunt a hard time. Be proud, he's British." Thus saith boring, bland, posh Chris Martin, leader of bland, posh, boring AOR combo Coldplay, with regard to posh, boring, bland ex-military troubador James Bl(o)unt.