Latest real-time BTC/USD, BTC/EUR, and other digital currency trading charts, courtesy of CryptoCompare.com
Plus another chart you should always keep in mind:
Bitcoin charts and data: courtesy of bitcoinity.org
Image Attribution: Stages of a Bubble chart: Courtesy of Jean-Paul Rodrigue – Creative Commons license allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.