David Tennant and Matt Smith are just two of a host of stars who appear in a new trailer for BBC's Red Nose Day taking place on Friday 15 March.
The video features a string of famous faces revealing their plans to raise money for this year's event. Miranda Hart teases fans with her plotting to ruin an episode of Call The Midwife, Jessie J reveals her plans to shave her head and David Walliams declares, "I'm not doing anything, I've already done enough..."
A tanned One Direction appear in Africa after recording the official Red Nose Day single, while Rowan Atkinson reveals he's going to be playing the Archbishop of Canterbury.
And Doctor Who actor Matt Smith admits, "I'll decide what I'm going to do when I've got my fundraising kit".
Watch the 'How will you do something funny for money?' trailer below:
This year's Red Nose Day will take place on Friday 15 March.