See the Pseudobabble 101 thread - I bet most of the 'published papers' got through the spelling checker.

My worst ever experience of this kind was the first major paper I produced in my first job. In the management summary my final recommendation was that something 'now be done' but it was mistyped as 'not be done', thus reversing the entire paper. Of course, the board only paid attention to the management summary and that was that - sixth months work lost forever!