Matt James of Loremaster, Erik Nowak of Blackdirge Publishing/Goodman Games, and myself gave a talk at synDCon 2010 about creating challenging encounters in 4e. Everything from reverse skill challenges to Beholder tunnels to fighting Orcus at level 1 is covered.
Dave "The Game" Chalker is the Editor-in-Chief and Co-Founder of Critical Hits. Since 2005, he has been bringing readers game news and advice, as well as editing nearly everything published here. He is the designer of the Origins Award-winning Get Bit!, a freelance designer and developer, son of a science fiction author, and a Master of Arts. He lives in MD with e, their three dogs, and two cats.