Banana

Bananas were a fruit beloved by the Doctor (DW: The Doctor Dances, The Girl in the Fireplace) and also a good source of potassium. (DW: The Doctor Dances) He also liked banana milkshake. (DW: Smith and Jones)

The Doctor claimed that while partying with Madame de Pompadour in 18th century France, he had invented the banana daiquiri several centuries early. He also gave Rose the advice, "always bring a banana to a party". (DW: The Girl in the Fireplace) They are commonly associated with monkeys. (DW: Ghost Light)

According to the Doctor, a banana grove grew in Villengard at the former site of the weapons factories. (DW: The Doctor Dances)

On Space Station Chimera, the Doctor found a banana whist searching his pockets for piece of wire. He gave the banana to Peri who later started to eat it (but gave up when the sight of a dead Androgum made her feel sick). (DW: The Two Doctors)

Reverend Ernest Matthews was given a banana by Josiah Samuel Smith just before Josiah turned him into a monkey. (DW: Ghost Light)

During a visit to Blackwood Falls, the Doctor ate two banana splits in quick succession. (NSA: Forever Autumn)

Duncan Goode told Martha, "...don't judge a banana by its skin". (NSA: Wishing Well)

The Doctor describes a "Banana Surprise" (NSA: Martha in the Mirror)

Expecting to land on a sunny beach, the Doctor emerged from the TARDIS with an inflatable banana. (NSA: Snowglobe 7)

After being defeated by the Doctor, Bob Kreesus slipped on a banana skin and fell over a cliff edge. (DWAM: Triskaidekaphobia)

When the Doctor tried to stop Sky Silvestry from copying him, one of the things he mentioned was banana. (DW: Midnight)

When explaining automatic doors to Diane Holmes, John Ellis and Emma-Louise Cowell, the females spotted bananas inside the supermarket, something they were more interested in. (TW: Out of Time)