S7, E11: Michael could not be happier when Toby (Paul Lieberstein) has to take a leave of absence and corporate sends Holly Flax (guest star Amy Ryan) to cover for him. Pam (Jenna Fischer) is forced to do a second Christmas party after Michael (Golden Globe winner Steve Carell) wants the party to be on the day Holly returns to Scranton. Meanwhile, Jim (John Krasinski) regrets agreeing to a snowball fight with Dwight (Rainn Wilson). Ed Helms, Leslie David Baker, Brian Baumgartner, Kate Flannery, Mindy Kaling, Angela Kinsey, Phyllis Smith, Oscar Nunez, Creed Bratton, B.J. Novak, Ellie Kemper, Craig Robinson, Zach Woods and Paul Lieberstein also star.