Happy Birthday to Who (documentary)

 was a DVD documentary that was released on 13 February 2012.

Booklet synopsis
Cast and crew recall the making of The Three Doctors in this brand-new documentary. With contributions from Katy Manning (Jo Grant), Stephen Thorne (Omega), producer Barry Letts, script editor Terrance Dicks and co-writer Bob Baker.

People interviewed
to be added

Crew
to be added

Home video releases
This documentary was released as part of the DVD for The Three Doctors.