There have been some excellent threads this week in the GMing Q&A Forum  — here are three that jumped out at me:
StillFoxx asks what drives you as a GM?  (and gets some great answers).
gospog started a discussion about the glow , that warm and fuzzy feeling you get from running an awesome gaming session.
Javaboy has kicked off a thread entitled How do you wow your players?  It’s just getting started, but I’m looking forward to seeing your responses.
…and I’d be remiss if I didn’t mention that the Treasure Tables GMing Tools Contest  ends this Friday — if you’ve been waiting to enter, don’t wait too much longer.