The answer is HYDRAULICS
The corresponding square is WATER WORKS
   by Dan Katz


Mixed Signals - Solution

Each set of phrases is an amalgamation of three TV show descriptions
from shows corresponding to each digit of the channel number.  Here
are the original shows and descriptions, which have initial letters
which when read in order starting with 1, spell HYDRAULICS.

1 = Herman's Head
Herman attempts to let Louise down easy.
Animal lusts after Jay's former girlfriend.
Genius clashes with  Angel over a romantic decision.

2 = Yes, Prime Minister
Sir Humphrey and Bernard learn to design surveys.
Jim attempts to abolish the Department of Education.
The British army defeats communist rebels on Saint George's Island.

3 =  Dinosaurs
Monica is harassed by a tree pusher.
A sudden repossession ruins Earl's Refrigerator Day.
Robbie questions howling as a rite of passage.

4 =  Red Dwarf
The crew gets trapped inside Better Than Life.
The Inquisitor forces Dave to justify his existence.
Cat's vanity is devoured by a polymorph.

5 = American Gothic
Lucas punishes a quartet of travelling criminals.
Selena helps Caleb with his school work.
Trinity puzzles over Merlyn's death.

6 = Undressed
Friends goad Liz into dating unpopular sophomore Z.
Emma advises Dean to lose his virginity to Kiki.
Andy pretends to be straight to fool his brother Brick.

7 = Legends Of The Hidden Temple
The purple parrot team conquers the steps of knowledge.
A blue barracuda escapes with two full pendants.
Olmec tells the tale of Geronimo's Moccasins.

8 = Inside Schwartz
Adam auditions to referee a Spanish soccer game.
David and Emily inadvertently watch their friends' erotic video.
Emily tries to fix Julie up with a doctor.

9 = Clarissa Explains It All
Ferguson gives his sister the silent treatment.
Janet fails a mother daughter magazine quiz.
Aunt Mafalda visits from the great white north.

0 = Sifl & Olly
Precious Roy tries to sell a bottomless pool.
A fork calls inquiring about sexual orientation.
Chester declares that his favorite emotion is itchiness.