TV's Frink said:
South Park hasn't been very good ever since they changed Cartman's voice from best thing ever to meh thing.
I think they changed Eric's voice because it was a strain on Trey Parker's vocal cords. But I think the character didn't suffer for it.
But go back and read the OP...this thread is about cleavage.
South Park is about cleavage*.... it's about everything.
*.... your mom's about cleavage, too.