But who's going to root the dog?

It will a bumper edition of Q&A tonight. Here's the guest list:

• Clive Palmer - Leader of the Palmer United Party
• Mark Latham - Former Federal Opposition Leader
• Larissa Waters - Queensland Greens Senator
• David Williamson - Playwright
• Rebecca Huntley - Social researcher and writer
• Nick Xenophon - South Australia Independent Senator 

So, a self-funded loony, an ex-Labor loony, a green loony, a precious-pie luvvie, a former ALP member and party historian, and a wowser.

Oh, and we must not overlook a compere whose most notable talent -- only talent, actually -- is an infinite capacity for interrupting conservatives. Tonight that gift will not be taxed, as there is not a single guest who remotely approaches that description.