It's been about 2 weeks since I planted a bunch of heirloom tomato seeds from packs dated 2005. I had given up hope and this weekend I planted some newer seeds. This morning we had a brief rain shower and suddenly I see a tomato sprouting. This is obviously from the old batch as it's too soon for Saturday's seeds to be sprouting.
It's funny -- this one already has little tomato hairs on the green stalk!