RED NOSE DAY: David Tennant's African Diary
We're sure you will all remember the emotional journey to Uganda that David Tennant made with Comic Relief in 2011 to witness the work that Sightsavers are carrying out there.
Read his personal account of the trip in his diary below:
To donate to Comic Relief call 03457 910 910 or click here to give online
And tune in to BBC One from 7pm tonight to watch the fundraiser's telethon.