http://whatculture.com/tv/family-guy-10-best-stewie-episodes.php

Victory is his!

I agree with this entire list except the Stewie Kills Lois/Lois Kills Stewie episode. It has its moments, as does every episode of the series, but it just doesn't do it for me.
Stewie is still funny, but it seems to be he's largely been relegated to those one-line quips.
I'll always think the show was its best before about 2007.