I hereby call this the greatest thread to be created on GC.
I think I'd rank the shows like this.
1) Family Matters - The Winslows made me happy
2) Step by Step - Only when Cody first got on the show
3) Dinosaurs - Who doesn't love baby?
4) Growing Pains - I always wanted an adopted brother that sleeps in a janitors closet
5) Boy Meets World - Who didn't love Cory?
6) The Hogan Family - You know you cried when the mom died in the car crash.
-Rudey