Remember: if we ever meet extraterrestrials, they may turn out to be weirder than anything we carbon-based meat units could ever imagine. I have no idea what kind of aliens are talking here, but I like to think that they’re Blue Hooloovoos.
Speaking of which, John Malkovich will have a role in the upcoming HHGTTG film, as “Humma Kavula.” There’s no such character in the book, though; apparently the late Douglas Adams penned a screenplay which is significantly different from the book in many ways.