Bioinformatics
I'm currently taking a class in bioinformatics. It's that overly large and vaguely defined area in which people study how to use computers to understand (for example) the human genome, human reaction to certain drugs, and the effectiveness of techniques in combating disease.
Here's something that amuses me: In engineering (computer or otherwise), you sometimes use triple redundancy to make sure things will work despite unexpected failure. For example, you might design 3 circuits that calculate the same thing. If 2 of the 3 come to the same conclusion, you go with that conclusion even if the 3rd is totally different.
Much to my amusement, amino acids are coded in groups of three nucleic acids as well. The first 2 matter, the third is just there. It's not exactly the same as triple redundancy, but it is similar and kind of cool.