John Cusack takes on John McCain in MoveOn.org ad

LOS ANGELES -- Pop quiz: Why has John Cusack jumped into the political arena with a pair of videos saying John McCain is a war-profiteering clone of President Bush?

"I know my opinion doesn't matter more than anyone else's and I just make films," he said. "But I do feel you have to speak out, and that's what I'm doing."

The 30-second videos, which went out to members of the liberal political activist group MoveOn.org on Wednesday, will begin airing as television ads today.

In one, Cusack offers a "pop quiz" to voters, asking them among other things: "Who supports keeping our troops in harm's way in Iraq but not the bipartisan G.I. bill of rights to support them when they return home?"

McCain and Bush both do, Cusack says, adding, "Bet you can't tell them apart."

In the other, he points out that Charlie Black, a key campaign adviser to presumptive Republican presidential nominee McCain, has been a lobbyist for Blackwater Worldwide, the largest private security contractor in Iraq.