Check out Ed Marquart's Gospel Analysis at "Sermons from Seattle." Ed is providing a Gospel Analysis for each week's text, with illustrations, sermon ideas, and a full text sermon.
At Dylan's Lectionary Blog by Sarah Dylan Breuer, you'll find a farewell sermon to her current congregation, "God Is a Foolish Farmer."
An especially helpful resource for me this week has been Todd Weir's, "Good Soil," at bloomingcactus. Todd talks about the clean and sober house he operates in New York City, and how he understands the parable of the sower through his work there:
"We are a clean and sober house for 58 people and we are doing a very imperfect job of helping people sort out their lives and find some stability and hope for the future. I can relate to the parable of the sower, because we throw a lot of seeds and not all find good soil."