Sacred 2:Homage to Douglas Adams
Douglas Adams was an iconic author who had a long career writing movies, radio plays, books, TV shows and more. He had a rather quirky sense of humor that endeared him to his long time fans. Many of them, it appears worked on Sacred 2. Their tributes to Douglas Adams can be found all over Ancaria.
In the Elven camp north of Clearview, there's an elf who helps you out with a quest called The Brother's Amulet. He tells you to retrieve the jewels that were removed from the amulet and later, after you've done that, puts the amulet back together to seal the jewel's power. His name is Barti Slartfass.
Douglas Adams had a character in two books of his Hitchiker's guide to the Galaxy series named Slartibartfast.
Apparently, there's another one in the Orc city of Ruka - however I wasn't able to find him with my light side High Elf. He may only be available if you take the shadow path. A picture of him exists on the Sacred International Forum.
There are other references to the works of Adams that can be found in Ancaria's cemetaries. There are a number of graves of celebrities, each with the deceased celebrity's name and an epitath that reads "So long and thanks for all the _____." - where the blank is filled in with what the celebrity was best known for. For instance, there's one that reads "George Carlin - So long and thanks for all the jokes."
The fourth volume of Douglas Adams' Hitchhiker's Guide Trilogy was "So Long and Thanks for all the Fish."