I'll be heavily inspired by:
- Zak's Vornheim Campaign
- Evan's Nightwick Abbey setting
- Some weird setting based on medieval Netherlandish superstitions (years ago, I can't find the link anymore)
- Richard Morgan's novels The Steel Remains and The Cold Commands
Evan's site has very useful bits on designing dungeons and standardized Lotfp monsters. Also, I like the inspirational sources gathered for the Nightwick Abbey setting. They help to inspire me for my as own, as-of-yet-unnamed setting (tentative working title "Beyond the Drowning Woods").
Richard Morgan just writes kick-ass sword & sorcery fiction. I especially like his take on the main character Ringil Eskiath.