Best (that haven’t already been mentioned by others):

• Get Smart
• Perfect Strangers

(The rest are so iconic I’m not even gonna bother linking them.)

• The Twilight Zone
• Gilligan’s Island
• Golden Girls
• The Wonder Years
• The X-Files
• Cheers

Worst: I dunno, because my criteria for “worst” is being forgettable.

Polarizing/YMMV:

• M*A*S*H
• Cops