Seth MacFarlane was born for this game. During Monday's at-home episode of The Tonight Show Starring Jimmy Fallon, the versatile actor put his singing skills to the test with a round of "One Song, Many Artists." As he sang the song "You're Nobody till Somebody Loves You," Seth was tasked with using as many character voices and celebrity impressions as he could to carry the classic tune. To kick things off, host Jimmy Fallon held up a card that read "Peter Griffin," instructing Seth to begin