What Terror Zone makes your heart pump when you see it pop up?
Chaos
cathedral and catacomb!
I like Chaos & Baal (Worldstone Keep) for obvious reasons.
Flayer Jungle is good too , as is Cows, for the density and the good chances to drop HRs
Lut Gholein Sewers is a favorite of mine too (I know most people don't see it as such) but it is the easiest to reach, has good density, easy monsters and good xp, but Cathedral and Catacombs might be my favorite with any Teleporting char because it is so fast and Andy is TZ bugged and just drops the best loot.
Each of my characters has a zone to run.
This Terrorzone Tracked made me able to run Travincal (my favorite) and other zones effectively and saved allot of time running Online games!
Since a few months I've been able to upload some highlights to YouTube too! (jopied_)
It still takes a lot of time but it's fun to do!