I like a lot of old-school kung fu movies, but to me, the absolute best one is the old Shaw Brothers film “Shaolin Martial Arts” starring Fu Sheng and Chi Kuan-Chun. A LOT of training scenes and the kung fu is fairly believeable. One of the earliest Shaolin films to show the tiger/crane, Golden Bell/Iron Shirt, etc.
Other favorites:
The Victim starring Sammo Hung.
The Kid From Kwangtung, starring Hwang Jang-Lee and Huang Yu.
The Prodigal Son, starring Yuen Biao.
Martial Club (Instructor of Death) starring Gordon Liu.
Super Power, starring Billy Chong.
Fist of the White Lotus, Gordon Liu.
The Invincible Armour, starring John Liu, Hwang Jang-Lee.
The Hot, the Cool, and the Vicious, starring Wang Tao and Tan Tao-Liang.
Last Hurrah for Chivalry starring Wei Pei. One of the best swordplay movies ever.
The Magnificent Butcher, starring Sammo Hung.
Warriors Two, starring Sammo Hung.
Five Shaolin Masters, Fu Sheng, Ti Lung, David Chiang.
Death-Dual of Kung Fu, starring Wang Tao, John Liu, Eagle Han.
3 Evil Masters, starring Yuan Te, Wang Lung-Wei.
Shaolin Rescuers, starring the Venoms.
Knockabout, starring Yuen Biao, Sammo Hung.
Dreadnaught, starring Yuen Biao.
Disciples of Shaolin, starring Fu Sheng, Chi Kuan-Chun.
Men From the Monastery, starring Chen Kuan-Tai, Fu Sheng.
Two Champions of Death, the Venoms.
Struggle Through Death, John Liu.
Hell’z Windstaff, Hwang Jang-Lee, Meng Hai, Meng Yuan-Wen.
The Woman Avenger (a.k.a., Killer B’s) starring Hsia Kuang-Li.
Shaolin Vs. Lama, starring Alexander Lo Rei, Chang Shan.
The Young Master, starring Jackie Chan, Hwang In-Sik.
The Streetfighter (the original one). starring Sonny Chiba.
Two Fists Against the Law, starring Hsu Chung-Hsin, Hwang Jang-Lee.
The Lady is the Boss, starring Liu Chia-Liang, Hui Ying-Hung.
Master Killer, Gordon Liu.
Shaolin Temple (the original Shaw Brothers version, a.k.a., Death Chamber), starring Fu Sheng, David Chiang, Ti Lung.
Jim