The folks at MSNBC were ecstatic this morning following the Supreme Court’s invalidation of the federal Defense of Marriage Act (DOMA), but that joy exploded to Chris Matthews levels of tingledom during the 11:00 a.m. hour when President Obama decided to call the couple who took the Prop 8 case to court while they were being interviewed by network anchor and outspoken same-sex marriage advocate Thomas Roberts. [See video after jump. MP3 audio here.]