Yeah, that was one of the more memorable bits, along with "I am the last person you wanna fuck with, because I will fuck you back, in ways you never even imagined!"
Season 3 was pretty stale, but it did sort of pick up towards the very end. The whole affair about Rita's pregnancy and them culminating it with as pivotal a turning point in the series as their wedding sort of made up for some of the blandness, and it helped that it was flanked by seasons two and four, the two best ones in my opinion.
If I had to rate them all, it'd probably be something like 2 > 4 > 1 > 6 > 7 > 3 > 8 > 5.