Topic: Human-alien encounters
- Doctor Who: The Complete Fifth Series. Disc 1 & 2
- Doctor Who: The Complete Fifth Series. Disc 3 & 4
- Doctor Who: The Complete Fifth Series. Disc 5 & 6
- Doctor Who: The Complete Seventh Series. Disc 1 & 2
- Doctor Who: The Complete Seventh Series. Disc 3 & 4
- Doctor Who: The Complete Seventh Series. Disc 5
Topic: Time travel
- Doctor Who: The Complete Fifth Series. Disc 1 & 2
- Doctor Who: The Complete Fifth Series. Disc 3 & 4
- Doctor Who: The Complete Fifth Series. Disc 5 & 6
- Doctor Who: The Complete Seventh Series. Disc 1 & 2
- Doctor Who: The Complete Seventh Series. Disc 3 & 4
- Doctor Who: The Complete Seventh Series. Disc 5
