NPR's Weekend Edition aired a story [1] on a recent Letter, P. Beiersdorfer, D. Layne, and E. W. Magee, Viscoelastic Suppression of Gravity-Driven Counterflow Instability, Phys. Rev. Lett. 106, 058301 (2011) [2]; see also the Viewpoint [3] in Physics. The Letter shows how adding something as simple as cornstarch can in principle suppress the turbulent flow which caused the oil-well-plugging "top kill" procedure to fail. Significant hurdles would need to be overcome to make this work in practice.
Links:
[1] http://www.npr.org/2011/03/05/134268980/could-cornstarch-have-plugged-bps-oil-well
[2] http://link.aps.org/doi/10.1103/PhysRevLett.106.058301
[3] http://physics.aps.org/viewpoint-for/10.1103/PhysRevLett.106.058301