the next one won?t happen until December 10, 2117 -- so read below if you wanna check it out!
http://blogs.discovermagazine.com/badastronomy/2012/05/30/everything-you-need-to-know-about-next-weeks-transit-of-venus/
via /. http://science.slashdot.org/story/12/05/30/1917234/everything-you-need-to-know-about-the-june-56-venus-transit
also: "a graphic novel of the story behind the Venus Transit"
http://mutha.ncra.tifr.res.in/ncra/for-public/transit-of-venus (PDFs linked from here)