http://www.freerepublic.com/perl/post?id=3427247%2C0
No big one.
http://129.164.179.22/apod/image/1605/MercuryTransit_Dierick_1500.jpg
Not sure how they assume the north poles of the earth, sun, and Mercury are to the left of the image. All are slightly “out of plane” with the orbits, and the orbits of earth and Mercury are not quite parallel, but they are near-perpendicular to the solar system’s ecliptic plane.
Uranus, I believe, is the most significantly tilted - which has never really been adequately explained to my satisfaction.
