First there was Aykroyd. Then there was Conan. The latest name on the Al Franken fundraising tour? Rosenstein.

Not exactly a Hollywood legend, Barry Rosenstein is nonetheless a billionaire hedge fund manager who is slated to host a fundraiser for Franken at his home in the Hamptons on July 30.

Rosenstein manages JANA Partners LLC, a fund based in San Fransisco and New York. He and his wife Lizanne (co-host of the fundraiser) have given generously to Democrats over the years, including about $2,600 to Franken's Senate bid.

Like several similar fundraisers in recent months, the Rosenstein event will benefit "Franken MVPs," a joint fundraising political action committee that splits funds between Franken's campaign and leadership PACs.

The minimum donation to attend is $500, though giving $5,000 nets guests the title of "co-chair."