Who would win in a fight between Bond and Bourne?
With his licence to kill, 007 has dispatched hundreds of villains and henchmen.
The MI6 man comes armed with a range of high-tech gadgets and his trusty Walter PPK.
But whereas Bond might see off his attackers with a laser disguised as a pen, Bourne will stick his enemies with a Bic biro.
And then batter them unconscious with a rolled up magazine.
The rogue CIA agent first appeared on the screen in 2002 in 'The Bourne Identity'.
When he woke riddled with bullets and a serious case of amnesia it was cinema audiences who regained consciousness.
They were slapped in the face by the film’s gritty violence. And they liked it.
Here was a man who could kick ass without needing to throw in a cheesy one-liner.
And he didn’t need a licence to kill either. He didn’t even have a driving licence. He didn’t even know who he was. And the only clue was a message surgically embedded in his hip.
Bond, womanising heavy-drinking James Bond, suddenly seemed distinctly out of date.
Matt Damon may have been blond and bland but this suited the blank-slate agent in search of a past.
And the actor himself enjoyed giving Bond’s Martini a stir and a shake. Then throwing it in his face.
“The Bond character will always be anchored in the 1960s and the values of the 60s,” he told the press last year (sounding a little bit like Dame Judi Dench’s M in Goldeneye).
“Bond is an imperialist and a misogynist who kills people and laughs about it and drinks Martinis and cracks jokes.”
By contrast Bourne, a serial monogamist with a dead girlfriend and a guilt-complex, appeared to be a much more interesting character.
And then Daniel Craig came out of the sea in his tight trunks and Bond was reborn.
Some might even say re-Bourne. Here was a grittier Bond, a darker Bond, even a blond Bond.
When he was asked if he wanted his vodka Martini shaken or stirred, the new Bond replied: “Do I look like I give a damn?”
Audiences around the world punched the air with excitement.
Bond was cool again. Yes, he was still super-suave. Yes, he still had an eye for the ladies. Yes, he still drove great cars.
But he also had a vulnerability. This was a Bond who got hit and got hurt.
Graham Rye, 007 magazine editor, saw 'Casino Royale' as a return to the era of Connery, where Bond was commanding and enigmatic.
And more like the fascinating character Ian Flemming originally created.
But he says the Bournification of Bond has gone too far in 'Quantum of Solace'.
“There is an obsession with making things darker and grittier but what happens when it gets too dark? You can’t see.
“Bourne is a ruthless killer without an identity. In this latest film Bond has become his identical twin.”
So it seems if it came to a fight, they might just knock each other out.