I find the case of DB Cooper very interesting. There was a documentary I watched on tv earlier this year (History channel?) that pointed the finger at a person that died several years ago. The authorities are being very vague about the new lead and they seem to be downplaying it.
FBI: 'Credible Lead' Surfaces in D.B. Cooper Case - FoxNews.com
FBI: 'Credible Lead' Surfaces in D.B. Cooper Case - FoxNews.com