This may be obscure for anyone without children, but others might recognize the show:
Fetch, Ruff Ruffman. It's a bizarre half animated/half real children's show on PBS. A cartoon dog sends real children out on missions during which they learn about the world. My children love it and I don't feel guilty letting them watch it.
So here's the knitting reference - Ruff Ruffman's grandmother was accused of sending her grandson (Ruff's naughty brother Scruffy who is in jail) a cake with a file in it.
Two children were assigned to work with the defense, two with the prosecution and two with the forensics lab.
Meanwhile, grandma knit her way through the show culminating with the miraculous act of knitting a sweater without needles when she was declared innocent.
Now, if they would haver Ruff take up knitting, that would really be something!