Buck Rogers: 1933
From a Kelloggs cereal giveaway (via Golden Age Comic Book Stories).
Buck Rogers: 2009
From the upcoming comic book from Dynamite. Newsarama has an interview with Dynamite's President Nick Barrucci and writer Scott Beatty about their plans for the series. Nothing too shocking in the interview. Mostly just that they're going to update the character while "sticking close to his iconic roots." I don't know that much about Buck (except for what I learned from Gil Gerard), so as long as it's all fun and jet-packy it'll be cool with me.