"Extraordinary and reprehensible circumstances", or will just plain "extraordinary" do?

Opposition party pledges not to use its Senate numbers to block executive government's proposals, except in "extraordinary circumstances". Sound familiar? What's really unsettling is: this comes just one week after Canada re-enacted the soap opera of Australia's 1997 Cheryl Kernot defection. May all the Lords of Kobol preserve us from some other democracy next week or the week after emulating Australia's "Joh for PM" farce... UPDATE: America, at least, has already had it own Joh for P.M. campaign - nineteen years before Australia did, in fact, when George Wallace ran for president in 1968.