Priorities USA Action, the SuperPAC launched by former aides to President Obama, collected $100,000 from director Steven Spielberg.

The SuperPAC reported raising $1.2 million in the second half of 2011, according to forms filed with the Federal Election Commission today.

Spielberg’s partner in DreamWorks, Jeffrey Katzenberg, donated $2 million to the SuperPAC last year, its largest single donor. Katzenberg and his political consultant, Andy Spahn, also are helping to raise money for the independent expenditure committee, set up to support Obama’s reelection.

The sums raised by Priorities and other Democratic-leaning SuperPACs fall far short of those being raised by SuperPACs supporting Mitt Romney and Newt Gingrich. Organizers expect that to change once the GOP nominee is clear and as donors max out on the amount they can give to Obama’s official reelection campaign. SuperPACs can collected unlimited sums from donors.

Update: Majority PAC, set up to defend the Democratic majority in the Senate, collected contributions from several industry figures. Peg Yorkin gave $2,500, Leo Hindery gave $10,000, Rob Reiner gave $5,000 and Corky Stoller, $25,000.