Acme Babelfish Inc. [ABFI]

We at Acme Babelfish are diversified in our pursuit of the future. While there are many divisions of our corporation, we are also the sole distributor of the only known interracial, intergalactic communication device known as the Babelfish. In fact, "device" may not be the best way to describe it...

The Babelfish is small, yellow, leech-like, and probably the oddest thing in the universe. It feeds on brain wave energy, absorbing all unconscious frequencies and then excreting telepathically a matrix formed from the conscious frequencies and nerve signals picked up from the speech centres of the brain, the practical upshot of which is that if you stick one in your ear, you can instantly understand anything said to you in any form of language: the speech you hear decodes the brain wave matrix. It is a universal translator which simultaneously translates from one spoken language to another. It takes the brainwaves of the other body and what they are thinking then transmits the thoughts to the speech centres of the host's brain, the speech heard by the ear decodes the brainwave matrix. When inserted into the ear, its nutrition processes convert unconscious sound waves into conscious brain waves, neatly crossing the language divide between any species.

The Hitchiker's Guide to the Multi-Universe points out that the Babelfish could not possibly have developed naturally, and therefore both proves and disproves the existence of God:
Now it is such a bizarrely improbable coincidence that anything so mindbogglingly useful could evolve purely by chance that some thinkers have chosen to see it as a final and clinching proof of the non-existence of God. The argument goes something like this:

"I refuse to prove that I exist," says God, "for proof denies faith, and without faith I am nothing".
"But," says man, "the Babel fish is a dead giveaway, isn't it? It proves you exist and so therefore you don't. QED."
"Oh dear," says God, "I hadn't thought of that," and promptly vanishes in a puff of logic.
"Oh, that was easy," says man, and for an encore goes on to prove that black is white, and gets killed on the next zebra crossing.

Most leading theologians claim that this argument is a load of dingo's kidneys. But this did not stop Oolon Colluphid making a small fortune when he used it as the central theme for his best selling book, Well That About Wraps It Up for God. Meanwhile the poor Babel fish, by effectively removing all barriers to communication between different cultures and races, has caused more and bloodier wars than anything else in the history of creation.