Fred Astaire
From Tardis Wiki, the free Doctor Who reference
Fred Astaire was an American entertainer who was the star of the 1920s musical stage play Lady, Be Good. Claire Daly saw the play four times and told John Andrews she thought Astaire was "marvellous". (DW: Carnival of Monsters)
When Torchwood Three agent Owen Harper asked Toshiko Sato if she'd ever seen a dead man dance, she told him she'd seen Astaire twice in Easter Parade. (TW: Something Borrowed)