"It's Not Unusual" is the theme song of his late 1960s–early 1970s television musical variety series, This Is Tom Jones. The first studio version was released in 1995 on the compilation album, The Legendary Tom Jones – 30th Anniversary Album .

Recently, My Sister is Unusual (最近、妹のようすがちょっとおかしいんだが。, Saikin, Imōto no Yōsu ga Chotto Okashiin Da Ga., lit."Lately, My Little Sister's Been Acting A Bit Strange, But."), also known as ImoCho (妹ちょ。), is a Japanese manga series by Mari Matsuzawa, serialized in Fujimi Shobo's Monthly Dragon Age since November 9, 2010.