The rules are: The third season took a creative turn, revolving more around cousin C. and Jim, the grandfather, than the immediate Hennessy family, more specifically not revolving around the raising of the Hennessy girls.
After the novelty of newly added ensemble characters wore off, the show shortly returned to its roots.
The reason is simple: he expresses something very true in a very funny way, examining just what happens when Daddy's little girl becomes a teenager.
Beginning with the warning signs (#5: Your car insurance suddenly costs more than the car), the book covers dating (Rule #2: Keep your hands and eyes off my daughter's body or I will remove them), the telephone (seemingly wired to her nervous system), braces (the costliest metal on earth), the first job, and more.
Veteran actor James Garner and David Spade also joined the show.