Three graphs. (Click on them for a bigger, better look.) The first depicts the Justices' voting in the 4 discrimination cases discussed in Supreme Court's 2007-08 Term: The Defining Decisions (Part 1: Discrimination) (September 16, 2008).
GRAPH 1: Discrimination Decisions

The second graph depicts the Justices' voting in the 5 culturally charged cases discussed in Supreme Court's 2007-08 Term: The Defining Decisions (Part 2: Cultural Issues), (September 20, 2008). You'll see that the Justices are rearranged. In each graph they are ordered from left to right according to their voting records along the liberal-conservative spectrum for the cases involved.
GRAPH 2: Cultural Issues Decisions

The third graph merely combines the first 2 to get a full picture of the liberal-conservative spectrum based on the Justices' political/ideological/philosophical voting in the discrimination and cultural issues cases together.
GRAPH 3: Discrimination + Cultural Issues Decisions

One final note.
Now a mere 9 decisions--4 on discrimination and 5 on cultural issues--may seem a bit thin to be deemed "defining." But just think of this. A coin is flipped 9 times. Every time it's heads. Wouldn't you be a bit skeptical? You think the coin just might be biased? At least a bit? Well the odds of 9 out of 9 heads actually happening randomly are 1 in 512. A probability of .5 to the 9th power, or .0019. Now THAT's what's pretty thin. So just say a Supreme Court Justice happened to vote "heads" in every one of 9 difficult, ideologically/politically charged, "reasonable people could disagree" cases. You think that Justice, like the coin, just might be biased? Let's be delicate and call the Justice "philosophically predisposed." And a Justice with a more even voting record, is probably less predisposed--at least along the same political/ideological/philosophical lines.
..............And that, of course, is why it's so important who's elected President and what sort of Justice(s) he's likely to appoint.
Tne next "defining decisions" post will look at "law and order" cases.