supremecourtTargetPoint has built an interesting visualization of the Ideological History of the Supreme court based on decisions from 1937-2007, on a scale rating them from Liberal (blue) to Conservative (red).  It’s a pretty big visualization, but an interesting way to see at glance the lean of the various justices and their tenures.

The Ideological History of the Supreme Court of the U.S. (SCOTUS) – TargetPoint.