 He refused to join cast members on a reunion show on RTÉ One's "The Late Late Show", choosing to appear on the rival network, TV3's "The Dunphy Show" instead.Irish singer and songwriter Bob Geldof was the first person to buy a Sharkey painting, with other collectors of his work including Charles Saatchi, Rosie Huntington Whitley, Michael Portillo, Courtney Love, Whitney Houston, Matt Lucas, and the President of Ireland Michael D. Higgins.Sharkey has been a full-time artist since 1992.