Arnie & Sly: together at last!

It’s a cinematic meeting of, er, minds that we’ve been waiting years to see: Arnold Schwarzenegger and Sylvester Stallone properly united on screen.

Okay, it's not quite De Niro/Pacino in heat, but it is for an action movie, which makes it worth anticipating.

Yes, according to Ain’t It Cool News’ highly placed “source” (we’re thinking it rhymes with Schmylvester Schmallone), Arnold will shoot a one-day cameo as himself for Sly’s latest, The Expendables.

The film, which sees a group of mercenaries sent to South America on a near-suicide mission to off a dictator.