I think my favorite episode ever is "Down and Out (Of District) In Beverly Hills"

It is the one where Andrea wins a newspaper contest and has to deal with them visiting her grandmother's apartment when she doesn't actually live there yet. Plus Steve meets a new girl who is just using him for his money.

I remembered the episode being on TV when I was a little kid and so it has sentimental value for me.

I just really love this episode, it's slightly above the others to me, from the way it flows, the way it's filmed everything really.