i didn't really like closing time either
....6 cybermen and a cybermat...not really on the scale of other episodes....
for example episode 12 of the past 5 series
series1- big brother, the weakest link, trinny + susannah and an entire fleet of daleks
series 2- ghosts appearing all across the world, a giant portal to another world being opened up to let millions of cybermen in.
series 3- the master captures the tardis, becomes pime minister, kills the president , unleashes an army of toclafane and takes over the world
series 4- features all of the companions, rose comes back the doctor dies, an army of cybermen, a doomsday device that will destroy the universe, the earth has been moved across the universe to power the doomsday device.
series 5- features all of the doctors enemies and the doctor gets locked in prison the tardis explodes and the universe ends.
series 6- 6 cybermen and a cybermat attack a shopping centre they are defeated by love....