Taco Zone is where Jess gorges herself on nachos after finding out her cancer is cured in "Married...With Cancer".
After asking Brian to get her some more salsa, she tries to eat the entire plate at once and ends up choking, which Brian at first considers to be a reaction to only finding mild salsa instead of hot. He finally understands her frantic motions for the Heimlich Maneuver, but as he struggles to find out how to do it, she collapses and is believed to have died.