Doctor Who spin-offs the charity's 2005 appeal. This starred David Tennant as the Tenth Doctor and Billie Piper as Rose Tyler, and filled in a gap between the episodes "The Parting of the Ways" and "The Christmas Invasion". A third Children in Need special, but one that was part of the series' continuity, was produced for the charity's 2007 appeal. "Time Crash" starred David Tennant as the Tenth Doctor and Peter Davison as the Fifth Doctor, and filled in a gap between the episodes "Last of the Time Lords" and "Voyage of the Damned". This takes part directly after Martha leaves the TARDIS,
School Reunion (Doctor Who) include free lunches with special chips. The Tenth Doctor, under the alias "John Smith", is undercover as a science teacher in the school, and his companion, Rose Tyler, is working undercover in the school's cafeteria. The Doctor is surprised by the good behaviour of the students and intrigued by the uncommon intelligence of one of his physics students. Both the Doctor and Rose relate the mysterious events around the school to the chips: Rose observes that the chip oil has an adverse effect on the other kitchen staff, who must use hazmat suits to handle the oil, while the Doctor