Get bitcoin historical data

You can find a lot of historical data here: https://www.quandl.com/data/BCHARTS-Bitcoin-Charts-Exchange-Rate-Data

Actually, you CAN get the whole Bitcoin trades history from Bitcoincharts in CSV format here : http://api.bitcoincharts.com/v1/csv/

it is updated twice a day for active exchanges, and there is a few dead exchanges, too.

EDIT: Since there are no column headers in the CSVs, here's what they are : column 1) the trade's timestamp, column 2) the price, column 3) the volume of the trade