1. What Jazz clothing peice is colored incorrectly in the cinematic Jazz 2 scene?
Which cinematic Jazz 2 scene?

2. Which Epic levels contain the blaster powerup?
A Diamondus Forever and Battle Game (battle1.j2l, for clarification)

3. What negative thing can happen if you attempt to use AntiCrash while connecting to a server?
AntiCrash crashes.

4. How does the JAIL concept work? What does it do?
The JAIL concept is actually team triggers. You may be thinking of the JAIL2 concept, but that's not what the question says.
It works by having Multiplayer Team Start Positions, one for each team, and no other ones. Each team gets a trigger zone only that team gets (E.G. Red gets TriggerID 1 and Blue gets TriggerID 2), and some walls and things are open for Blue, and some for Red.

5. What was the purpose of The Moving Bot? (Not moving topics, there was a reason why The Moving Bot was there, and it related to causing less confusion about topic moves.)
Giving a link to where the topic had been moved to?

6. What tileset did J2C proclaim the "best usermade tileset ever" when it was released?
Both the Cyberspaz tilesets..

7. What was the original name, both abbreviation and full name, of JCS?
MLLE? Multi-Layer Level Editor? Or was that from Possum? I forgot.

8. Who created the Jazz 2 levels? Cliffy Belinski (CliffyB) did most of them, but Jon Maclellan (Jeh/Evil Bill) did some of them, like Gargoyle's Lair. (He also made the levels for HH98 and TSF)

9. Which two people that appear in the Jazz 2 default high score list have signed up for the JCF? List both their names as they appear in the high scores and their JCF usernames.
CliffyB, CliffyB, Jon, Jeh?

10. Why was JazzNET cancelled?
A hardware problem caused all the files to be lost.