Pyromaniac

Pyromaniac is a Fallout 2, Fallout 3, Fallout Tactics and Lionheart Perk, as well as a Fallout: Brotherhood of Steel skill.

Fallout 2 and Fallout Tactics
This Perk will make your character do horrible things with fire -- to other people. +5 points of damage with fire-based weapons.

Fallout 3
With the Pyromaniac perk, you do +50% damage with fire-based weapons, like the Flamer and Shishkebab.

Affected weapons===
 * Shishkebab
 * Flamer
 * Firelance
 * Nuka Grenade
 * Zhu-Rong v1418 Chinese Pistol

Fallout: Brotherhood of Steel
Pyromaniac is also a Fallout: Brotherhood of Steel skill.

Each level of this skill increases your Critical Chance when using fire. Available only to Cain.

Lionheart
You have a natural affinity for fire and a knack for setting things ablaze - especially other people.You get +10% damage with fire-based weapons or spells.