 Barrowman appeared as Ben Carpenter in the low @-@ budget film Shark Attack 3 : Megalodon ( 2002 ) . His musical abilities are featured in several film roles : as Jack in the Cole Porter biopic De @-@ Lovely ( 2004 ) , singing a duet with Kevin Kline on the song " Night and Day " ; and as the lead tenor Stormtrooper in The Producers ( 2005 ) , singing " Springtime for Hitler " . Barrowman co @-@ presented and performed in the BBC One series The Sound of Musicals ( 2006 ) . 
