The Table Booster is a Chrome-Browser Extension that enhances the data-grid of Google Analytics by providing three visualisation types for every metric column. You can use graphs in the grid-view. Every row can use a different visualisation-type. Combine all types even in the same row. Extend Google Analytics with a MS Excel like heat-map.
Table Booster features also a Z-Test comparison tool. Check if two rates are different or not.