I don't know if this actually counts as a dissenting opinion, since there seems to be a conclusion around here that a little irrationality is okay. But I published a post about the virtues of irrationality (modeled after Yukowsky's twelve virtues of rationality), found here:

http://antisingularity.wordpress.com/2009/06/05/twelve-virtues-of-irrationality/

I suppose my attempt is to provide a more rational view by including irrationality but that is merely my opinion. I believe that there are good irrational things in the universe and I think that is a dissenting opinion from the major views expressed here. Please take that how you will.