Good friend Marc Spears joins Justin Poulin for this week's Celtics Stuff Live interview.  We talk about his move to ESPN's "The Undefeated", his time on Boston with the Globe covering the 2008 championship team, and his work with the National Association of Black Journalists.  We also talk about Jaylen Brown's connection to the Kerr family and whether or not Ray Allen's number should be retired with the Celtics.?