Russian Roulette EP is an EP by Ed Harcourt, released on 5 May 2009 worldwide by Dovecote Records. The EP was made available as a digital download-only release, and as a limited edition 512-megabyte USB stick in the shape of a bullet. The USB stick features album artwork, photos, and seven unreleased music videos. Official promo-only CDs were also released for radio promotion. The song "Caterpillar" was written by Ed about his newborn daughter Roxy, and the time she spent in an incubator shortly after her birth. Harcourt said, "It's the first song I've written about her. She was a little ill and we [Ed and his wife Gita] waited for her in the hospital for the chrysalis so we could take her home." The EP is also dedicated to her.