On the eve of an event celebrating its landing, NASA's Mars probe loses touch with Earth. The President wonders whether to cancel the satellite address to thousands of schoolchildren as a result, but is convinced by CJ's arguments. Though Bartlet declares that all music after 1860 sucks, he's forced for political reasons to attend the Reykjavik opera -- and drags CJ and Sam along with him. CJ's particularly worried about running into some candidates she rejected for a position as her deputy, and Sam frets about running into Mallory, who's dating a professional hockey player who falls down a lot. Josh is impressed with Donna's enthusiasm for stamp detail and is converted to the cause when she memorably declares that philately's fun.

Starring:

ROB LOWE as Sam Seaborn
DULÉ HILL as Charlie Young
ALLISON JANNEY as C.J. Cregg
JANEL MOLONEY as Donna Moss
RICHARD SCHIFF as Toby Ziegler
JOHN SPENCER as Leo McGarry
BRADLEY WHITFORD as Josh Lyman
and MARTIN SHEEN as President Josiah Bartlet