Awesome

TNTUtils

Downloads on CurseForge: http://minecraft.curseforge.com/projects/tntutils

This is a small mod that provides some utilities for explosions.

TNTUtils can be installed on a server without clients needing it.

Do note that custom explosions from other mods may or may not be affected by this mod.

Current features:

• Change the size of explosions or disable them entirely
• Disable TNT explosions
• Prevent TNT from chain-reacting
• A "/explosion" command
• Modify the chance that a destroyed block will drop as an item
• Prevent explosions from destroying
  • tile entities or
  • any specified block or
  • any blocks at all
• Prevent explosions from damaging
  • players or
  • animals and mobs or
  • any entities at all
• Prevent Creepers from destroying blocks ("environmentally friendly creepers")

These features are configurable.