I’ve always liked Vathara, who is one of the better exponents of the theory that any sufficiently interesting universe can be crossed over with any other. I don’t like all her stuff, but I couldn’t go to sleep last night until I finished “Shadows in Starlight”.
Even if you don’t normally like fanfic, this one you might enjoy. It is a work in which we learn what Rurouni Kenshin would be like if the people and situations had been born into the Star Wars universe, circa A New Hope. However, she also manages to retcon the chronologically-earlier first trilogy, such that I don’t hate and despise all its works and pomps at the moment. (Though I still say Alec Guinness was thrice the Obi-Wan that anyone else could possibly be.) Anyway, tons of fun. If we have to have Those Other Movies, I’ll explain ’em to myself like this.