The only criticism that can be done to the series is its natural retirement. In the first season Malcolm looks young and in the last season Malcolm is a teenager with acne on his face.
I also learned a few new words, watching some episodes. Here are some of them:
Running time, means the length or duration.
Masterminding, one who plans and directs a complex or difficult project.
Bunch, group of person.
Stubborn, unreasonably obstinate.
Filthy language, foul language.
Spill, to cause or allow to run or fall from a container accidentally.
Derailment, as in French, I thought it was different.
Outraged, anything that strongly offends.