The Irish prime minister's unofficial portrait problem

Various British and Irish news outlets report that two Dublin museums unexpectedly acquired new nudes -- of Irish Prime Minister Brian Cowen.

A guerrilla artist, using a trick popularized by grafitti-artist Banksy, placed portraits of the taoiseach in the Royal Hibernian and National Galleries. In one, he's holding his underwear; in the other, he's in the loo. In both, he's nude, though depicted in classically chaste poses. 

Irish police immediately confiscated the paintings and announced a public search for the offending, offensive artist -- although it's unclear that he or she committed any crime at all. Except against good taste, perhaps.