David Tennant, who is well known for his role as the 10th Doctor in Doctor Who, will be a guest on tonight's Christmas special edition of QI. On the comedy quiz show, he will answer various general knowledge questions alongside; Alan Davies, Lee Mack and Bill Bailey in an attempt to gain the most points. This will be the first time that David Tennant has appeared on this programme, which is hosted by Stephen Fry, and tonight's episode will broadcast at 10pm on BBC One. In total, it will have an approximate running time of thirty minutes and some preview clips from the show can be found here. You can also view more information about tonight's episode here on the programme's official website and more details about David's further guest appearances will be posted here on this site soon. Will you be watching David Tennant when he appears as a guest on QI tonight?