I'll have to say I still think it's worth tuning in every Sunday night.
I think the reason the writing stays so strong, and by all rights probably shouldn't be by now, is the constant input of new highly-talented folks, mostly it seems from the Harvard Lampoon.
Some senior writers go on to other things, but the folks they're replaced by are as funny as they were, only not quite as well-known.
I think by this ongoing changing-of-the-guard, but changing with equally talented, well-educated, and completely twisted people is what keeps the quality up, when by all rights it should have lagged a long time ago.
I'll have to say the hippies, praying mantis, and deadly daisies did it for me too.
Yvan eht nioj!
Mk