Jimmy Fallon's effortlessly hilarious "Tebowie." Photo courtesy of ultimateclassicrock.com.Jimmy Fallon will never have the improvisational, reactionary “quip” skills that made late-night hosts Johnny Carson, David Letterman and Conan O’Brien cultural icons. Perhaps more so than all of the above, though, Fallon has mastered the art of the parody. From Neil Young to Charlie Sheen, Fallon loses himself in the character and executes. In “Tebowie” below, the vocal cadences and trance-like Bowie gaze are impressive enough, let alone the lyrics that correspond effortlessly to “Space Oddity.”The bigger issue: Do you think the Zac Brown, Lady Antebellum-loving Tebow even fully gets the joke? Follow our news and updates on Twitter, our whereabouts on Foursquare and our relationship status on Facebook. Or send us a telegram.John Hendrickson is the managing editor of Reverb and a multimedia journalist for The Denver Post. Follow his rants on music and more on Twitter.