Assume everyone has seen this. Might be nice to start using this data.
http://www.nature.com/nature/journal/v444/n7118/abs/nature05329.html
Nature 444, 444-454 (23 November 2006)
Global variation in copy number in the human genome
Richard Redon1, Shumpei Ishikawa2,3, Karen R. Fitch4, Lars Feuk5,6, George H. Perry7, T. Daniel Andrews1, Heike Fiegler1, Michael H. Shapero4, Andrew R. Carson5,6, Wenwei Chen4, Eun Kyung Cho7, Stephanie Dallaire7, Jennifer L. Freeman7, Juan R. González8, Mònica Gratacòs8, Jing Huang4, Dimitrios Kalaitzopoulos1, Daisuke Komura3, Jeffrey R. MacDonald5, Christian R. Marshall5,6, Rui Mei4, Lyndal Montgomery1, Kunihiro Nishimura2, Kohji Okamura5,6, Fan Shen4, Martin J. Somerville9, Joelle Tchinda7, Armand Valsesia1, Cara Woodwark1, Fengtang Yang1, Junjun Zhang5, Tatiana Zerjal1, Jane Zhang4, Lluis Armengol8, Donald F. Conrad10, Xavier Estivill8,11, Chris Tyler-Smith1, Nigel P. Carter1, Hiroyuki Aburatani2,12, Charles Lee7,13, Keith W. Jones4, Stephen W. Scherer5,6 and Matthew E. Hurles
