When Renata, Mary's rich, spoiled sister arrives in Rutherford, Dick devises a plan to help Mary get the best of her once and for all. But Dick's not immune to temptation when he gets a chance to live a life of luxury.

When Dick and Strudwick mistakenly think that Tommy and Alissa have eloped, the take off in hot pursuit in an attempt to stop the wedding.

When Dick and Sally brag about how good their partners are in bed, Don and Mary suddenly find themselves madly attracted to each other.

Bored with life in Rutherford, the aliens step through a portal that sends them to a parallel universe located in Manhattan. Many familiar people inhabit this plane, but Dick's depressed when he doesn't immediately find Mary.

The aliens continue living in Manhattan, a parallel universe, but soon they've had enough. Everyone except Harry, who's having the time of his life.

Tommy sits in on one of Dick's classes and discovers that he's a really bad teacher. And Sally decides Don isn't successful enough and it's up to her to change that.

The aliens consider the founding of America and discover that the principle of equality, although a noble concept, can be carried to ridiculous extremes. And Dick is shocked to learn that he isn't an American at all.

The aliens consider the founding of America and discover that the principle of equality, although a noble concept, can be carried to ridiculous extremes. And Dick is shocked to learn that he isn't an American at all.

Dick goes with Mary on an archaeological dig, and while he's away the other aliens turn their apartment into a hotel. Dick immediately digs up a spear head, and Mary confesses that she's been going on digs for years and has never found anything.

Dick and Sally develop a magic act and start performing in clubs, but soon they're in the grips of the "dark side" of fame. And Harry joins a self-defense class and discovers a new talent, getting himself beaten up.

When a psychic tells Dick and Mary that they're from two different worlds and Dick may soon be returning to where he came from, Dick sets out to find a replacement boyfriend for Mary. And Sally decides that if the psychic has this kind of information about Dick, she knows they're aliens and has to die.Top Episode.

Dick has no idea what to do when Mary says she wants to spend some time apart. Sally becomes a TV weather girl, and her predictions are so accurate that Dick, afraid that the mission may be compromised, orders her to quit.

Dick's relationship is on the line when he lies to Mary about having two front row tickets to a sold-out Gordon Lightfoot concert.

When a new alien accidentally arrives through the time space portal, Dick tells Harry and Sally that it's their responsibility to take care of him. And Dick alienates Mary by taking sides with her detested mother as he tries to navigate through the minefield that separates the two women.

Dick and Don go halves on a timeshare which turns out to be a dump. And Harry's afraid that he's shrinking now that Tommy's taller than he is.

Dick reads a self-help book, then tries to achieve happiness by removing friction from his life.

Dick finds some love letters written to Mary by someone identified only as Scoochie, and they're so wonderful that Dick claims them as his own. But Dick's in trouble when the real Scoochie appears.

Dick's arch-rival Liam Neesam (John Cleese) returns to Rutherford with a fiendish plan to turn the earth into a theme park called Planet Monkey World, and Dick must find a way to stop him.

The mission has been cancelled, and the aliens have a hard time dealing with it. To say goodbye, they throw a huge space-themed party complete with Elvis Costello as the entertainment. Dick convinces Mary to go with him and the other aliens, but at the last minute she changes her mind.