We started with Buffy, which had us completely sucked in by the time Xander's buddies ate Principle Flutie. Then, after Netflixing Buffy all the way to the end, we started on Angel.
2007, Lani Diane Rich, “Curse Your Sudden but Inevitable Betrayal”, in Jane Espenson, editor, Serenity Found: More Unauthorized Essays on Joss Whedon's Firefly Universe, BenBella Books, 108