- Every episode is named after a song. During each episode, you'll be able to hear the song that it's named after.
- David Tennant was, in his own words, "uninvited" to the BAFTA Awards Ceremony so that Angus Macfadyen's then girlfriend, Catherine Zeta-Jones could take his place.
- The scenes in the hospital were filmed in Gartloch Psychiatric Hospital, in Glasgow, before it closed. Many of the extras in these scenes were former patients.
- The budget was so tight that director David Blair (II) dubbed his own voice over one of the supporting artists' in order to avoid paying them for a speaking role.
