I started running Dungeons and Dragons 4e about two months ago. I've STed in World of Darkness for years, run Exalted, and a handful of indie games, but I'm still kinda new to DnD. So far, I think I'm doing okay, but I think I could be doing better. This is an open call for suggestions/comments.
Here are some specific questions I have:
What's the best thing a DM has ever done in a game you've run/you've done as a DM?
What's the worst?
What are some good tactics/strategies to use in general during combat encounters?
Are there any good riddles, puzzles, traps lists on other sites you've used?
Thanks in advance!