Some helpful online audio/video materials related to China customs and airports:

http://www.myechinese.org/Chinese/Online_Detail.aspx?id=341 (Going Through The Customs, video clips made for Mandarin learning)

http://www.simple-chinese.com/learn-chinese/lesson-20/index.html (Airport and Customs, text dialogue audio files made for Mandarin learning)  (*note: sometimes this website may not work)

http://www.youtube.com/watch?v=CaY0ockrt4g&feature=related (Beijing Airport Drop-Off, a short video clip at Beijing airport)

http://www.youtube.com/watch?v=OuNd8gHmET4 (成龙为中国海关知识产权保护代言宣传片)