I want to compare own data with data generated by google analytics. For example I want to see the number of my twitter followers compared with my page visitors per day.
If you are willing to use Google Spreadsheets (which I can recommend) You can use a simple script to import your Analytics data automatically.
Here is a complete rundown of how to set it up: http://spreadsheetpro.net/how-to-import-google-analytics-data-into-google-spreadsheets-in-3-simple-steps/