Salvias are the greatest plants. There are a million different kinds, and many of them flower most of the year in SoCal. They need to be cut back just once or twice a year. They are drought-tolerant, and they attract loads of hummingbirds and bumblebees.
The only thing some people might not like about them is they are a bit wild and messy looking, and some grow quite large -- 5 foot by 5 foot or so.
Some of my favorites include:
Salvia microphylla "Hot Lips"
I've noticed that the bumblebees seem to cut into the flower where it's connected to the stem -- I'll try to get a picture some time!