I'm glad localmonkey started this thread, since I've been wrestling with the decision to get these or not. The show is an undeniable cult classic whose profile will only rise with Christopher Nolan possibly working on a theatrical update.
I didn't jump on the first wave since half of them were just variations on Number 6, but that the second wave is really expanding the line by including so many characters. Wandering Planet is also offering late-comers the chance to pick up a bunch of wave 1 figures if they pledge to get anything from the new wave. And while 4" retro-style figures don't always appeal to me, it seems fitting for a property dating from the late '60s.