I'm really enjoying The Perry Rhodan series. The biggest hurdle is the sometimes dry translation but the stories are a pulp aficionado's dream. I would love to see a line like Paizos Planet Stories revive this series. For those of you into Science Fiction pulp gaming this is really a great series with lots of ideas for games and campaigns.
I'm flipping through my copy of Star Frontiers: Digitally Remastered right now. I dont really think it would be too much of a leap. By the way have you guys been keeping up with Star Frontiersman? He's up to issue 13 as of today (more reading for me to catch up on). What a great job!