This offer starts in May, but was announced today:
In celebration of "National Museum Month," Bank of America today launched the tenth season of Museums on Us™ by introducing the program in California. This expansion - the largest in the program's decade-long history - enables anyone with a Bank of America credit or check card or MBNA credit card plus one guest the opportunity to visit 86 of the nation's finest cultural institutions on both coasts for free during the month of May.