I remember reading somewhere that the fifth regeneration (Peter Davison to Colin Baker) was inspired by the crescendo in the Beatles' "A Day in the Life" (1967). Twenty-six years later, I decided to put this to the test.
Also features a trailer for Sci Fi's "Doctor Who Weekend", from August Bank Holiday, 2008.
(aka "A Day in the Life of Androzani" (aka "The Cavern of Androzani"))