The format of Jim'll Fix It consisted of children from the public writing in to the host, Jimmy Saville, requesting that "fix" something for them, to make some wish come true.
- The Fourth Doctor (Tom Baker) appeared, in-character, during the 1970s, where he handed out torn-off scraps of scarves to give scarves to some girl visitors to the studio.
- Veteran movie actor Peter Cushing (who played Dr. Who in the two cinematic outings) wrote to the show in 1986 to ask if a variety of rose could be named after his late wife.
- Numerous viewers have reportedly written in wishing for their own TARDIS or to ride in the Doctor's.
- The Doctor Who mini-episode "A Fix with Sontarans" came about as a request by a fan named Gareth Jenkins (not the same Gareth Jenkins involved in Big Finish Productions).