I know, it's a California specific site, but it's still helpful.
Because what to plant is, y'know, pretty much equally important as what not to plant.
That said, here are my top ten for reseeding/naturalizing:
Echium (the tall tall tall ones)
I also like planting vegetables where they don't belong, and leaving succulents in various sidewalk nooks.
Spring is almost here, right? The rain is making me feel seriously waterlogged.