I read this one last year. I took a break once in awhile because, for me, it was slightly tough going. I’ve read a lot of Anderson and occasionally have blogged about him at Blackgate.
Here’s the introductory first of them.
What I took from Dancer was, as rhialto got, a good take on Atlantis. This compounded with what I’ve also taken from Stephen Lawhead’s Taliesin. Other than these, I haven’t read many books concerning Atlantis. I also really like the weird science aspect of the time traveler. I can see that working in an AS&SH game.
As an Appendix N writer, I think Anderson should have a solitary thread. Off the top of my head, here are some important ones for AS&SH. This is no way definitive. Anderson has a huge output, and I have much to read.
Three Hearts and Three Lions (the alignment system and Gygax’s Trolls come from here)
The Broken Sword
Hrolf Kraki’s Saga
War of the Gods
The Winter of the World
The High Crusade
Anderson also wrote Conan the Rebel. I haven’t read it yet. Maybe I should get right to it, because I’m going to be running some 2d20 soon. Good inspiration.