According to Jim

The Marriage Bank (3x26)

Air date: May 11, 2004

Thinking it might get Cheryl to let him go on a fishing trip with Andy, Jim makes a "deposit" in the "marriage bank" by agreeing to go to a couples seminar with her. Jim's plans are foiled, however, when Dr. Ted, the marriage guru, declares the whole marriage bank mentality unhealthy and Cheryl learns Jim's real motives – so that Dr. Ted must intervene.