*Spoiler*
In the final episode where Valya has to transmute the AI fear virus to survive, I was fucking pumped. Clearly, they meant for this to be the origin of the Litany against fear. Kicked ass.
Valya Harkonnen was by far my favorite character in Dune Prophecy. Despite her ruthless will to power, machiavellian competence, and willingness to sacrifice almost anyone to achieve her ambitions, I find myself wanting her to succeed. I'm going to read Sisterhood of Dune now.