Hey, don't forget Yucca recurvifolia or Yucca gloriosa! The variegated Y. gloriosa is particularly attractive. Here is my pride and joy Yucca recurvifolia, just now opening up blooms in time for frost (figures):
I'm still trying to figure out what setting I had my camera on that day. The pics I took that day look like I scanned them in, but I took them with my digital camera. Oh well. Here's a couple more in my yard:
