What's the Name of That Book??? discussion

Have you tried anything by Roger Zelazny?

Yes, Jack of Shadows should fit your description perfectly (and it's my personal favourite:). I think that also Changeling and Creatures of Light and Darkness are close to what are you looking for.

You can also check out Andre Norton's Witch World series. In this series, which is set in an alternate dimension, you have magic users, those who depend on technology and some who do both. Witch World is the first book. There are about 35 books in the series, but they are loosely grouped in smaller series. I will warn you--it depends on which grouping you are reading if there is more magic or more technology.

The Kate Daniels series is UF, but uses both magic and technology. Magic Bites is the first book in the series. But I'm not sure if this is "high fantasy" enough for your tastes though.

I believe Marion Zimmer Bradley's Darkover books would qualify, though I never got into them. Anne McCaffrey's Pern books might be worth a look, too.

Lawrence Watt-Evans wrote a trilogy that begins with Out of This World. It starts on our Earth but also involves two parallel dimenions, one a high-fantasy world and one a space-opera future world. Moving back and forth between the worlds is a big part of the plot. The books are seriously brutal at times, not just escapist literature.

Speaking of Watt-Evans, his The Cyborg and the Sorcerers would definitely count. The main character is a military cyborg investigating a world where the people are using what sure seems to be magic.

Christopher Stasheff's The Warlock in Spite of Himself is also about a main character from a future highly technological world investigating a world where magic seemingly works. If you like it, there are quite a few sequels.

Finally, Brian Daley's The Doomfarers of Coramonde is one of my favorites. It takes place almost entirely in a high-ish fantasy world, but one of the main characters is a Vietnam-era soldier whose APC was transported to the fantasy world when they need something that could defeat a dragon. That was a hell of a fight scene, believe me. The soldier comes back on his own later on and becomes a big part of the story.

I'm going to second all of Peter's suggestions. Especially the Coramonde series.

The Wiz Biz by Rick Cook is another that you might find interesting.

Maybe take a look at The Gate of Ivory by Doris Egan. High tech, space travel and the usual scifi elements and then there's magic that only works on one world and most offworlders assume is a scam.

my favorite cross-over was Piers Anthony's Apprentice Adept series.

You might like Mike Resnick's Weird West Tales series. It's a steampunk series that takes place in the Old West with a mix of sci-fi and fantasy: robots and shapeshifters, zombies and horseless carriages. The first book is The Buntline Special .

Ash: A Secret History by Mary Gentle (broken into four volumes for the U.S. market) is an epic that has SF in it, but "feels" like fantasy.

Warhammer 40k is basically high fantasy in space- Orks, Elves, Chaos Demons, magic, and giant gothic cathedrals as starships.