When Tommy catches a bug, the crew gets its first taste of human illness.

Dick is introduced to the concept of birthdays--and it dawns on him that he's getting old.

Dick assigns Sally to go on a date and, not surprisingly, the guy turns out to be a jerk.

While Sally does a slow burn at being the often-overruled second in command, Dick lights up his life by taking up smoking.

Dick discovers the emotion of jealousy when Dr. Albright's old boyfriend returns to visit on a promotional tour of the novel he dedicated to her. Harry adopts a stray dog.

Dick's one lonely guy when Dr. Albright goes on vacation. Sally and Harry are lured by skin-care products that promise eternal youth.

When an obnoxious professor dies during a party in his honor, Dick finds the will specifies that he must deliver a “forthright and honest” eulogy about the universally despised academic. Tommy neglects his female pal August to hit it off with an “easy” cheerleader.

Dick receives a roundabout lesson in family values from Dr. Albright's loopy brother, who claims to have been abducted by aliens.

Dick discovers the consequences of unvarnished truth when he repeats some of Dr. Albright's unflattering comments at an academic committee meeting. Sally and Harry apply for driver's licenses.

While Dick and Harry take up painting (Harry's good; Dick isn't), Sally takes over the school bake sale with the gusto of Gen. Patton.

A snowstorm -- the Solomons' first -- spoils Dr. Albright's trip to Chicago, leaving her stranded in a truck stop with Dick.

The Solomons learn about the give and take necessary to human friendships when they turn their anthropological gaze to the next-door neighbors.

When Dick's evasive about his past, Dr. Albright suspects he's a '60s radical fugitive. Harry joins a CD-of-the-month club, and is swamped with CDs.

Flummoxed by feminism, Dick dons a dress to infiltrate Dr. Albright's women-only study group. Harry and Sally get jobs at a pancake restaurant.

Dick decides that the Solomons don't ôfit in” on Earth, so he shops for an ethnic group to join. Meanwhile, Sally wants to fit in with Tommy's handsome teacher.

The Solomons' faith in human nature is shaken when they fall victim to crime (""This planet is in a bad neighborhood,"" sighs Sally). Meanwhile, Dick makes Tommy join the school basketball team.

Dick decides the reason Harry is “odd” is because he lacks a father, and sets out nurture the suddenly rebellious Harry. Meanwhile, sparks fly when Sally meets the hostile mother of her boyfriend.

Albright gets a new office, much to Dick's chagrin. Sally lands in the hospital---where she, Harry and Tommy pretend to be “ER” doctors.

While Dick is trapped in the basement, Evil Dick begins a plan to impregnate all women in Ohio.

Evil Dick plans to take over the world and pick up where Dick left off with Albright.

Aghast at the treatment of aliens in a hit science fiction movie, the Solomons attend a science fiction convention to try to set the record straight -- and Sally's first experience of hotels get her hooked on room service.

Romantic woes between Sally and Randell don't deter Harry from signing up with a dating service. August tests Tommy's loyalty.

Dick's romance with Mary is out in the open---and she doesn't like it. Meanwhile, Sally wants to be a cop.

When Harry runs for city councilman, Dick discovers the complexity of the democratic system and struggles to make the right vote.

Homecoming's upcoming, but Dick can't seem to understand football's appeal. Tommy has a crush on his Glee Club teacher. Sally makes Nina her best friend. Harry gets a job as a security officer.

Dick's delighted (but Tommy isn't) when Tommy's accepted to a school for smart kids. Sally falls for a guy she met in a gay bar. Harry dabbles in magic.

Sally discovers the joys of motherhood when Mrs. Dubcek asks the Solomons to baby-sit her grandson. Meanwhile, Dick begs Mary to let him “fish sit” for her while she’s away at a conference.

Thanksgiving's an alien concept for the Solomons; it's an annoyance for Sally (who must cook), and an onus on Tommy. But Harry finds romance.

A jealous Dick decides to show Mary how funny he is after she asks another professor to emcee a college fund-raiser she's organizing. Meanwhile, Harry loses his beloved coat, and Sally builds a shelf to hold her shoes.

Harry and Sally discover the true meaning of Christmas at the mall, where they get jobs. But Dick turns curmudgeonly. Tommy tries to find the perfect present for August.

Dick, upset that Mary got a prime parking space and he didn't, quits his job. Harry loses his memory and becomes paranoid thinking aliens are taking over the world.

When Tommy asks Dick to direct his high school production of “Romeo and Juliet,” Dick takes the role a little too seriously. Sally tries to get Officer Don to fix Albright’s parking tickets.

While doing a favor for Dr. Albright, Dick sprains his ankle and discovers the power of guilt. Harry, desiring his own room, moves into a tree house. Tommy uses Sally to sell chocolate for a school fund-raiser.

Dick fears his relationship with Mary has grown stale. Tommy's growing tired of August's “perfection.” Harry and Sally switch jobs.

Dick's guilt over hitting a chipmunk with his car spurs him to animal-rights activism. Tommy's in trouble with August again. Meanwhile, Harry joins the Boy Scouts.

Dick, fearing that Mary has him wrapped around her little finger, takes lessons in being "manly"---from Harry. Sally and Tommy have a showdown with the game Monopoly.

While Dick cracks North Rutherford society (to Albright's chagrin), Tommy hangs out with school toughs. Meanwhile, "Mustang Sally" develops an interest in wrestling.