The Political Quiz Show
I like these quizzes for some reason. This one was one of the first I've taken that I felt asked good questions and the result seemed accurate.
The Political Quiz Show rates you on a 0 - 40 scale, 0 being 100% liberal, 40 being 100% conservative. What did I score? The perfect 20, making me a "Colin Powell" Centrist.
But seriously, this is an internet quiz, produced for mass consumption, not an in-depth analysis of the meaning of liberalism versus conservativism.
I agree there may have been some bias to the conservative side, but I think the approach - divorcing the philosophy from the issues - is sound. Too many of these things ask questions about specific issues, such as gun control, abortion, or what have you, and ignore the fact that what makes you a liberal or a conservative is a philosophy, not a stand on one issue or another.