Check out how the justices voted in this Supreme Court decision that was handed down a couple weeks ago. Arizona v. Gant reflects a division on search and seizure rights that doesn't fall on normal lines. Here is oneway of conceiving of the ideological differences on the Supreme Court:
The More Extreme Conservatives: Justices Scalia and Thomas
The More Moderate Conservatives: Chief Justice Roberts and Justice Alito
The Moderate: Justice Kennedy
The More Moderate Liberal: Justice Breyer
The More Extreme Liberals: Justices Stevens, Souter, and Ginsburg
The lineup for this case:
Majority: Justices Stevens, Scalia, Souter, Thomas, and Ginsburg
Dissent: Chief Justice Roberts, Justices Kennedy, Breyer, Alito
That places the more extreme conservatives and more extreme liberals in the majority and those more moderate in the minority.
Note also that this is a 5-4 decision, so don't let it be said that all the 5-4 decisions are the four conservatives vs. the four liberals with Justice Kennedy as the deciding vote. This sort of division is much more common than you might have thought.