Bloodlines #1... from 2016? Well if that seems like rather a random book to discuss here... you're not entirely off the mark. Without this book, however, it's quite likely that this very podcasting "channel" would never have come to be! You might consider this issue to be the gentle flapping of a butterflies wings, which ultimately led to over a hundred episodes (and counting) of the Cosmic Treadmill.
Join Chris (@acecomics) as he shares the genesis of his comics-podcasting "career", with many thanks to his friends over at Weird Science DC Comics.