What Are You Good at GM's Challenge

A new GMs Challenge has been issued by the blog Barking Alien.  I figure I will join in.

What genres, settings, or games in general do you GM best? Which ones do you think you  totally rock? 

My Top Five:
1. Cinematic Unisystem
2. Dungeons & Dragons (circa 1980s is my best)
3. Horror games
4. Convention games. I have had many people tell me my Gen Con games rock.
5. Games for kids

Which games could you use to work on? That is, if your group wants to play one of these games, you yourself would probably recommend a different GM.

Tougher one. I am usually always the one in the GMs seat.

My Bottom Three:
1. World of Darkness
2. Anything historical, but not Victorian. (I do Victorian well).
3. anything Palladium

What elements of Gamemastering do you do best? What aspects do you nail more often than not?

My Top Five:
1. Engaging plots
2. memorable NPCs
3. Flexibility.  Years of teaching have taught me to stay light on my toes.
4. Fairness.
5. Fun.  Keep it fun.

Which elements are still a work in progress? Name some things that you don't do as well as you'd like.

My Bottom Three:
1. Newer D&D.  Don't quite have the rules mastery I would like.
2. Time management. Games tend to run over the time I have alotted and I never get as far as I would like.
3. Knowing when to shut up and let the players do their thing.  I get excited and want to gabber on, and on (and on).  I need to take more of the "Dave Arneson" style and let the players do the talking and work.


How about you?