I'd like to address number 6, Viking's methane first.  This revolves around the discovery of microscopic quantities of methane in some clods of dirt from Mars.  As everybody know, methane is a by-product of the bovine digestion process, so this clearly points out to me that at some point in the history of Mars, there were microscopic cows living in the dirt on the planet.  Now the absence of any organic molecules on Mars can be explained quite simply.  Cows can't play the organ.  Therefore they didn't build any - it would have been a waste of effort.

I would further surmise, that if there were cows on Mars, then it is likely that other livestock were also there, albeit in a similarly microscopic form.  Thousands, perhaps millions of years ago, there may have been whole miniature farmyards nestled between the dirt molecules.

Who's next, then?

-- Edited by ddvmor at 10:09, 2005-03-18

Number 8, The pioneer anomaly is mine to explain.

Quite simply, the 'draw' experienced by the Pioneer spacecraft is JDK's natural magnetism.
What more need be said?

And tax...

Nope, sorry, you got me there.  Can't think of a single thing.