Props
... that while filming the episode "Props", many Glee actors had to swap roles with another actor in the cast?
... that while filming the episode "<b id="mwDWk"><a href="./Props_(Glee)" id="mwDWo" rel="mw:WikiLink" title="Props (Glee)">Props</a></b>", many <i id="mwDWs"><a href="./Glee_(TV_series)" id="mwDWw" rel="mw:WikiLink" title="Glee (TV series)">Glee</a></i> actors had to swap roles with another actor in the cast?