The TV Programme
"Time for Teletubbies! Time for Teletubbies!" Each episode follows a standard format - The sun rises on Teletubbyland and there is a short scene involving one or all of the Teletubbies getting up to various activities, usually involving toast or custard or their favourite things. 
The Windmill spins. Normally, it spins slowly, and when it stops spinning, the Teletubbies go to bed. When it spins fast, it summons the teletubbies. 
They have a big hug and fall over onto their backs. When they get up they climb up a hilltop together, presumably to ensure good reception. One by one the aerials on each Teletubby's head and the screens on their tummies briefly light up for a test run to check everything is working. Then, one of the Teletubbies is selected to show a film on its tummy, and his / her aerial and screen light up and the other teletubbies gather round to watch. The film shows small children doing various activities - anything from going for a walk to a special occasion like a christening. Sometimes they listen to a story told by the "funny lady". When the film has finished, the Teletubbies give a groan of disappointment and shout "Again! Again Again!" and the film is repeated in its entirety. After the film, the Teletubbies generally have a longer period of play, often including some dancing games.
The Puddle Dance.
The day's entertainment is rounded off with some computer-generated animation superimposed on their land including a pink house with mysterious inhabitants and a Noah's Ark of amimals marching two by two over the hills of Teletubbyland.
The Animals march two by two across the hills in Teletubbieland.
Then, all too soon, it's time for tubbie-bye-bye, where everyone says bye-bye at least three times, before jumping down through the hole in the roof of the dome, and the sun sets at the end of another day in Teletubbieland.