One of the ways I judge any story, whether written (by any author in any genre) or visual (TV, movie), or spoken (storyteller) is whether or not I care about what happens to a character who's a stranger to me before I hear/see/read the story. Since I didn't keep up with Buffy while it was being broadcast, I don't know the backstory many other readers do, but I still find the actions of the unfamiliar characters in line with what little I know and with what's happened before in the story. The action is consistent, the characters are well-drawn, and the the only thing I would like to see more of is the bad dude (dudette?) with the blue skin. That Key is important or Giles wouldn't take that licking and keep on ticking. I can only assume that everything's going to heat up in the final chapter (and what a chapter that's sure to be!).
In other words, you're doing a great job on this one! I applaud you, from a technical point of view (keeping the characters in character and making them all real to your readers), from the dramatic point of view (the interwoven story lines of our Clark trying to get home, this world's Clark learning about his heritage, and the Buffy-rooted danger with the Old One), and from the WAFFy point of view (Spike and Buffy, this Lois and our Clark, Giles and everybody but Buffy). This has kept my interest much longer than I originally thought it would, and I can't imagine how you're going to wrap this up with just one more chapter and an epilogue!
Hey, you post the sequel, I'll read it! Deal? Good! Is it ready to go yet? Aw, come on! Please?
Oh, and Labrat, about hijacking the feedback thread? I thought your clarification was totally appropriate. Now real hijacking, whoo, I could tell you some stories....