The soap opera 潜伏(qian fu) around 40 minutes for each one. with standard pronunciation ,easy to hear.
The running man奔跑吧兄弟(ben pao ba xiong di) is a little longer,but very funny,using not difficult words too.
If you want to know some culture things, introduce you 卧虎藏龙,荆轲刺秦王 and 英雄,十面埋
伏 (Crouching Tiger, Hidden Dragon、jingke ci qinwang/ hero/ House of Flying Daggers/)
but the Jet Li's huangfeihong series is the best kongfu movie. 黄飞鸿之男儿当自强 is the best show.