Right on the button, Sam. And it shows that, with that lineation, I need to write some more. Damn!

Aha! I have it.

Shape Shifter

Says Tony, ‘Loose the dogs of War.’ Says I, ‘And that I can, sir.’
Says Tony, ‘Score with Shock and Awe.’ Says I, ‘And I’m your man, sir.’
But when the invasion goes tits up, as Tony learns to rue it,
And drains at last a bitter cup, says I, ‘I always knew it.’
And this I say, from day to day – my purpose never falters –
‘I’ll kiss your bum till kingdom come or till the weather alters.’

Now Gordon needs to look about where probity and trust is.
Says I, ‘I’t’s me! I want to be your Minister of Justice.’
But when it’s clear within the year that no-one likes the bleeder,
I make it known about the throne that Jack’s the lad for leader. (Chorus)

But then, as Gordon goes for broke (and no-one could be broker)
It looks as if the silly stiff will not become a croaker,
Why then I vow that, as of now, my faith is undiminished.
This is the bloke for honest folk (at least until he’s finished).
I will repeat, in tones discreet, to all my best endeavour,
‘There is no shit I will not eat, your Man of Straw for ever.’

Hey, you Brits! Any glaring errors here? I've never actually seen the show.

My TARDIS hub can’t shift its shape—
Chameleon circuit’s shorted—
But I change bodies to escape
My death, which has been thwarted
Ten times since 1963!
I trust regeneration
To keep me on the BBC
Till man’s extermination.

I’ll vworp vworp British children’s minds
Till Daleks call a truce, or
Till each lost episode rewinds,
For I’m the Doctor! (Who, sir?)

Julie, it looks right to me. We watched hours and hours of "Dr. Who" on our local public television station some twenty years ago (along with a great deal of "Monty Python's Flying Circus"), and Minnesota is not exactly the Cotswolds. I think a lot of US folks have seen the early Doctors.