Not sure why this is more entertaining than their real correspondence. Feuds are common in science and always have been. Newton feuded with Leibniz and Hooke (and a bunch of others too). As secretary of the Royal Society, Newton actually destroyed a lot of Hooke's work after his death, which is why he is not more famous today.
Pasteur and Koch famously feuded all their lives. Lister convinced them both to attend a grand meeting of the fathers of microbiology. According to one anecdote, reconciliation was at hand, but due to a translator's error, all of Pasteur's references to Koch's group, during his speech were translated as "the German Butt-Heads." (or the equivalent)
One thing that Pasteur and Koch argued about was the cause of cholera. The Egyptian government was so desperate that they hired both groups to come to Cairo and work on the problem, during an epidemic. It turned out that Koch was correct and Pasteur's guys actually died of cholera. *pwn*