...Hitchcockian doppelgangers. Who frequently even get the same lines; notably "close your eyes" (Darla to Liam before she bites him, Buffy to Angel before she sends him to hell), and "was it me? Was I not good?". (Proving once and for all that, fanfic aside, one shouldn't wish sex with Angel on anybody. The morning after, you know.) Loved her in "Inside Out", too, and admired once again the casting of VK who really does look like JB and DB both. Of course, this ruined a plot bunny about a Connor and ghostly Darla story which haunted me for a while...
Oh yes, Darla and Buffy are...