Alan Cumming from The Good Wife
Anyone who watches The Good Wife knows that Eli Gold lights up the small screen, but you ain't seen nothing until you see Alan Cumming take the stage and sing his lungs out. This triple-threat has performed in tons of musicals—including the 1993 revival of Cabaret and The Threepenny Opera—and even released his own solo album in 2009, I Bought A Blue Car Today, which was based on his one-man show.
More recently, Cumming returned to his Cabaret role as The Emcee in 2014, and further showcased his singing (and soft shoe) skills by co-hosting the 69th Annual Tony Awards with Kristin Chenoweth.
Watch The Good Wife on CBS.