N Is a Number: A Portrait of Paul Erdős is a 1993 documentary directed by George Paul Csicsery about the life of mathematician Paul Erdős.
Erdős himself appears in the film. As of 2007, using the official cast list in the credits, it gives Erdős a Bacon number (and thus Erdős-Bacon number) of 4. However, Sir Alec Guinness, identified by name by the narrator, appears in the film, getting an honorary doctorate with Erdős; his presence would give Erdős a Bacon number of 3. Since Frost/Nixon was released in late 2008, Erdős has a Bacon number of 3 through official credits.

2004 film by Lu Chuan

1980 film directed by Jamie Uys

从灯火通明的大都市，到人烟稀少的深山老林；从广阔无垠的大草原，到人迹罕至的沙漠戈壁；从长年积雪的高海拨山区到一望无际的平原；从浩瀚大地到碧海蓝天……中国，这片古老而又神奇的土地，囊括了多种特质的地貌，哺育着各族儿女，也孕育着各类珍奇野兽，奇花异草。这次，通过镜头，我们去探访散落在这片土地上的美丽奇景。沿着长江流域，去看喀斯特地貌造就的奇石怪林；去云南的热带雨林，寻找亚洲野象、滇金丝猴；来到青藏高原，奔赴内蒙草地，攀爬山脉，眺望西部边陲。这里，是你我熟悉又陌生的美丽中国。
本片是CCTV和BBC第一次联合摄制的作品，历时4年拍摄，使用了航拍、红外、高速、延时和水下等先进摄影技术。一共六集，分别为《富饶华南》、《彩云之南》、《青藏高原》、《长城以外》、《龙之疆域》和《喧闹海岸》。