Sorry, John Schneider… the “Bo” here refers to guest star Bo Derek.
Here’s the official description for the January 13, 2012 episode of Chuck.
MORGAN FACES THE CONSEQUENCES OF HIS TIME AS THE INTERSECT WHEN HE MUST PIECE TOGETHER A LOST WEEKEND IN VAIL — BO DEREK (“10”) AND ANGUS MACFADYEN (“BRAVEHEART”) GUEST STAR — As Chuck (Zachary Levi) and Sarah (Yvonne Strahovski) try to realize a new, safer future, Morgan’s (Joshua Gomez) past as the Intersect sends them to Vail on one last mission, where they enlist the help of an unlikely source — the legendary Bo Derek (as herself). Elsewhere, Jeff (Scott Krinsky) and Lester (Vik Sahay) continue their own spy mission. Adam Baldwin, Sarah Lancaster and Mark Christopher Lawrence also star.
