Dragon Ball Z: Bardock - The Father of Goku, known in Japan as ドラゴンボールZ たったひとりの最終決戦～フリーザに挑んだZ戦士 孫悟空の父～ (Doragon Bōru Zetto Tatta Hitori no Saishū Kessen~Furīza ni Idonda Zetto Senshi Son Gokū no Chichi~, "Dragon Ball Z: A Lonesome, Final Battle~The Father of the Z Warrior Son Goku, who Challenged Freeza~"?), is the 1st Dragon Ball Z TV Special, which is an addition to the popular manga and anime series. It first aired on October 17, 1990, between Dragon Ball Z episodes 63 and 64 (during the fight against the Ginyu Force). Bridge Entertainment's title is The Father of Goku. FUNimation re-released this and the History of Trunks film on a digitally remastered double feature DVD on February 19, 2008; a Blu-ray Disc version was released on July 15, 2008.

Source: Wikipedia