update:
First Read - Gingrich explains bounced check: "The former House speaker, who’s fighting to remain a viable challenger to Mitt Romney in the Republican primary, laughed off a $500 bounced check cut by his campaign that was intended to help him pay to qualify for the Utah primary. “This is one of those goofy things,” Gingrich told reporters following a speech at a senior citizen center here. “That check was drawn in December. The account actually was closed by the time they processed it. It wasn’t a question of money. That particular bank account was closed.”"
OK, just "one of those goofy things"--apparently the Gingrich campaign writes checks and then closes the checking account. Memo to vendors: if you get a check from the Gingrich campaign, RUN to the bank to cash it before the campaign closes the account!