It's possible I didn't see it, but I don't think anyone's mentioned Guy Clark's "Homegrown Tomatoes". Really lively funny song. My favorite part:

If I could change this life I lead,
You could call me Johnny Tomato Seed
I know what this country needs,
It's home grown tomatoes in every yard you see
When I die don't bury me
In a box in a cold dark cemetery
Out in the garden would be much better
Where I could be pushin up those home grown tomatoes.

BlueJay