It's official ladies and gentleman, Australia Prime Minister Kevin Rudd is now a Twitterling! You can follow him at: http://twitter.com/KevinRuddPM.
I sent him a message yesterday:
@KevinRuddPM G’day sir, great to see you here! Looking forward to your messages.
Suffice to say, I'm not holding my breath for Singapore Prime Minister Lee Hsien Loong to start using Twitter. There's still time for you though sir… look, even Wikimedia Commons has a profile picture for you, ready to go!