In the same vein as the bayesian argument for creationism and misapplications of Gödel's incompleteness theorems, there are misapplications of the second law of thermodynamics against evolution of life ("undesigned", e.g. darwinian or lamarckian).

The second law is a mathematical consequence of (say most) evolution equations, in particular of Hamilton and Schrödinger equations for reasonable hamiltonians. And also of simple statistical models with variables (volume, temperature,...), statistical ensembles.
See [Wikipedia][1].

The argument is that life is complex and evolution implies a decrease in complexity/entropy contradicting the second law. See for instance [here][2].

The flaw is that the Earth, where evolution occurs, is not an isolated system. If we consider rather the solar (or just Sun-Earth) system there is loss of entropy on Earth but a compensating gain on the Sun.

For a recent anecdote (and a nice blog to add to your blogroll) see [Retraction Watch][3].

[1]:http://en.wikipedia.org/wiki/Second_law_of_thermodynamics#Derivation_from_statistical_mechanics
[2]: http://www.christiananswers.net/q-eden/edn-thermodynamics.html
[3]: http://retractionwatch.wordpress.com/2011/03/16/more-on-applied-mathematical-letters-journal-retracted-paper-questioning-second-law-of-thermodynamics/