We've gone through pages of games I've never heard of, then we hit two in a row that I own. Coincidence is kind of surprising sometimes.
I liked the Agent 13 novels, they were good basic pulp stories. Whatever else was going on, Frank Dille was a decent writer.
Not as entertaining as the original Shadow and Spider pulps, but they were good enough that I wish I'd found the other novels to read. The nice part about them being obscure is that you could probably steal elements without even needing to file off the serial numbers.
re: the Hercules & Xena RPG, I have that one too. I didn't like the folksy/jokey writing style and it counts successes instead of just totaling up the dice - which I don't like, but I can see how it would appeal to people who don't like adding up the totals of 6 or 10 d6s.