John McCain has some advice for Barack Obama as the the presumptive Democratic presidential nominee tries to pick a running mate: Get someone who can keep it short.

"Taking in my opponent's performances is a little like watching a big summer blockbuster, and an hour in realizing that all the best scenes were in the trailer you saw last fall," McCain said Saturday in his weekly radio address.

"In the way of running mates, Senator Obama should consider someone with a knack for brevity and directness, to balance the ticket."

In the address, McCain continued to argue two familiar themes: Obama's too much of a celebrity and his energy policy won't work.

"Let me take a stab at a plot summary of the Obama campaign: America is finally winning in Iraq, and he wants to forfeit. Government is too big, and he wants to grow it. Taxes are too high, and he wants to raise them. Congress spends too much, and he proposes more. We need more energy, and he's against producing it," McCain said.

"Energy in particular seems to confound Senator Obama, because if there is any problem that can't be solved by words alone it's America's need for secure and affordable energy supplies," the presumptive Republican presidential nominee argued.

"So far, he's managed to come up with an energy plan that's so timid only OPEC and a few interest groups in his own party are happy with it. And this week, Senator Obama set about correcting that impression."

That's a matter of debate. Obama has long had an energy plan, and this week added some new elements, notably a rebate of up to $1,000 for families to help with energy costs.

To hear the McCain address: http://www.johnmccain.com/downloads/080908_weeklyaddress.mp3