This is what it looks like when you set a bucket of gasoline on fire, toss it through the air, film it at 2500 fps and then slow down the footage reaaaaal slow. It's totally dangerous, highly inadvisable (don't attempt this at home, etc.) and absolutely awesome to watch. Plus, as Fuck Yeah Fluid Dynamics explains, there's actually a physics lesson hidden in this video by The Slo Mo Guys:
In the first segment, when they kick a tray of gasoline, one can see lovely fiery vortices forming around the backside of the tray as it's launched. This is the start of the tray's wake. In the latter half of the video, they launch the flaming gasoline from a bucket. Notice how the flames are in the wake while liquid gasoline streams out ahead without burning. This is because it is primarily gaseous petrol that is flammable. As the liquid fuel breaks up into droplets heated by the burning gasoline vapors nearby, the rest of the fuel changes to a vapor state and catches flame.
More at the always-excellent Fuck Yeah Fluid Dynamics.