What major discrepancies exist between "versions" of the Bible?

Based on a comment from @AndrewThompson, >'the' Bible (any one you care to name) is no more evidence of anything than the BOM is. You might take the numerous discrepancies between versions of 'the' Bible as the proof of that statement. there is a belief out there that "versions" of the Bible apparently have "numerous discrepancies". I'd like to know what these are. What is the most egregious textual variant measured in terms of its impact on theology? P.S. If you are going to cite the game of "telephone" please be prepared to cite a specific example, demonstrably showing manuscript evidence. If there are so many "discrepancies" this should be an easy exercise. The Codex Vaticanus, the Codex Sinaiticus, and the Dead Sea Scrolls are all online. Additionally, there are several "[Critical Apparatuses"](http://www.ericlevy.com/Revel/Cosmogony/Guide%20to%20BHS%20Critical%20Aparatus.PDF) , the best are by [Bruce Metzger](http://www.amazon.com/Text-New-Testament-Transmission-Restoration/dp/0195072979) , that will catalog every known variation. These things can be checked, I'd just like a good example of something significant.