Flaming Lotus Girls / Angel of the Apocalypse
A bird-like shape made from metal and drift wood. The head and wings use propane and liquid fuel for flame effects. The wings are as tall as 20'. The audience is allowed to control the propane effects on the inner wings.

Matt Crooks / ManBot
35' (or maybe 25') tall flame shooting robot

Dave King / U-Bangees
Group: Controlled Burn Reno
4 fire cannons using propane for 40' flames

Orion Fredericks / ThermoKraken - Angel of Destruction
Group: Therm
A 26' tall, 1000 lb performance piece that uses propane and alcohol. This one screams howls and pops.

Skot Croshere / Breath of Fire
This is what happens when you combine a breathalyzer, microcontroller, and solenoid valve. Along with some shapely looking plywood, A2D converter and LCD. The drunker you are the bigger the flame. Nice parts write up included on site.

Lucy Hoskings / Satans Calliope
Probably the most advanced piece of fire art ever made. A tuned (although you would never believe it when you hear it) pipe organ that breathes fire. The organ consists of 17 pulse jets, 14 truck horns, 14 organ pipes and two vertical flares. Propane is used to create the notes. All of this sits on a working electric golf cart. A midi keyboard is used by Lucy during performance. Unfortunately there is very little information about this project on-line.

Nat Bletter / Exploding Bubbles
Soap Bubbles, propane, and helium. Threaded metal rods hold up the structure. The flame ring was covered in steel wool. Issues such as bubbles escaping without being ignited, and the pan of bubbles occasionally catching on fire would come up.
Video