No, no BAF waves in stores yet - it sounds like the first wave of DCU Classics (with Metamorpho BAF) might hit around Christmas, or early '08. As far as what has come before that, its been the DC Superheroes line, consisting of Superman and Batman's respective worlds. Lots of Supes and Bats, some repackaged characters from the Batman comic line (Nightwing, Robin, Joker), and some new baddies/supporting characters (such as Clayface, Two Face, Catwoman, Azrael, Luthor, Darkseid, Mongul, Bizarro, Brainiac, Steel, Supergirl, Batgirl, etc.).
This line is shaping up to be pretty nice the way it looks. At first I thought I might be all in on these, but with Indy Jones on the way next year and Hasbro saying we'll have a Star Wars lineup similar to this year (yikes), that's going to be enough to keep up on (alongside Marvel figures for me). I know I'll pick up the main leaguers/characters (Flash, GL, Green Arrow, WW, Hawkman, Aquaman, etc.), and it would be nice to have a good mix of baddies to go alongside them. We'll see. There's already some BAFs (Grodd, Grundy) that I want, but I don't necessarily need the entire waves