Youtube hosts a Spanish programme on the Life of St John of the Cross. It is in eight sections. It is entitled: Vida de San Juan de la Cruz, poeta místico y carmelita descalzo
Here are the first two parts. The other parts can be found on the YouTube site
Even if you do not understand or speak Spanish well (like me), the beautiful photography of scenes from the Life of the Saint and where he frequented (and was imprisoned) and the dramatic readings of the poems of the Saint in the original Spanish make it worthwhile
Pity there are no English subtitles.