Today's Throwback Thursday post is a collection of our screen caps of David on BBC One's Live Earth coverage back in July 2007.
The show featured live footage of the Live Earth concert which was held in London on 7th July 2007.
The show was organised to raise awareness of climate change, Live Earth was a massive series of concerts taking place over seven continents.
David Tennant was one of a number of guest presenters who took to the stage to introduce acts.
David introduced the American girl band The Pussycat Dolls.
Other acts on the London show included Black Eyed Peas, Duran Duran, John Legend, Kasabian and Madonna.