Dennis Quaid Files for Divorce, Seeks Joint Custody

By Mike Fleeman 11/30/2012 at 09:20 PM EST Kimberly Buffington-Quaid and Dennis Quaid Casey Rodgers/NBC/AP Dennis Quaid is ready to end his marriage for good.After his wife of eight years, Kimberly Buffington-Quaid, sought legal separation in October, the Vegas star filed Friday for divorce in Los Angeles Superior Court.The actor requests joint physical and legal custody of their 4-year-old twins, Thomas and Zoe, and offers to pay spousal support, according to the petition. This will be the third divorce for Quaid, 58, who was previously married to Meg Ryan and P.J