Dear Mr. President: Please cancel your inaugural festivities and give the money to tsunami victims. Sincerely, Mark Cuban. The Dallas Mavericks owner is urging readers of his Web log ( blogmaverick.com) to contact politicians and tell them to get their priorities straight. In an emphatic missive on his Web site, Mr. Cuban criticizes Congress for making what he calls frivolous expenditures and chastises everyone involved with elaborate inaugural events.