Tonight's must-see: "Treasure Hunters"

A group of five teams in Alaska and a group of five teams in Hawaii begin a search for hidden treasure, unaware of each other's existence. Their very first challenge involves deciphering Morse code. Laird Macintosh is the host.

Gender roles are challenged as the men's and women's teams struggle to present complete dinner services. The keys to success are communication and timing, and the proof is in the pudding.

Ted reconsiders women he rejected in the past, thinking his taste has changed, and decides to call a woman (Anne Dudek) whose heart he broke when he broke up with her---on her birthday.

Richard learns that Christine (Julia Louis-Dreyfus) has a serious boyfriend and invites the two of them to dinner to apologize for being rude when he met the man. The evening brings up old memories that force them to reconsider their post-divorce relationship and set up boundaries.