Some of their decisions in biology are equally suspicious. For example, should genes, proteins, or DNA be patentable? That one has gone to the Supreme Court on occasion. But patenting human genetics can lead to crazy scenarios like "suddenly the entire human population in the United States is violating Monsanto's patent", which is patently absurd. Of course, I am purposefully exaggerating and twisting some of the arguments, but you can see how the courts can get biology just as wrong as any other technology.
On a related and amusing note: In March 2000, President Clinton announced that the genome sequence could not be patented, and should be made freely available to all researchers. The statement sent Celera's stock plummeting and dragged down the biotechnology-heavy Nasdaq. The biotechnology sector lost about $50 billion in market capitalization in two days. see http://en.wikipedia.org/wiki/Human_Genome_Project
My point is Not that the court has flaws. It does--that's why the appointment of Supreme Court Justices is so dam important. Enen then, I've noticed justices change their views through out the years--so I'm glad they are there for life. Would I like to see Ph.D's in only the hard sciences a basic minimum as a requirement in order to be Supreme Court justices--Yes!
They also have historically had a completely different axis on which their decisions turn. Not left or right, but strict or flexible in their relationship to the constitution. It leads to some real surprises and people often interpret these in terms of political pressures but really the supreme court is the one set of people in government who care the least about pleasing some political masters.