Don’t get too excited but a mini-Partridge Family reunion was held Saturday in Atlantic City when David Cassidy and Danny Bonaduce played a song onstage together. According to reports, it’s only the second time in 40 years they've done that.  Bonaduce, a Philadelphia disc jockey, played the role of Cassidy's younger brother on the '70s TV hit, but lip-synched and only pretended to play the bass guitar on the show.  On Saturday, after he did his standup comedy routine to open the show at Resorts Casino Hotel, Cassidy got him to play "Doesn't Somebody Want to Be Wanted." for real.  I want to know when Susan Dey joins them for “I Can Feel Your Heartbeat”.