Or as Maria likes to say, "a cactus party".
When I think of the desert, the Saguaro cactus is what comes to mind... well, that and tumbleweeds. There aren't a whole lot of these around the Phoenix area, but once you head south to Tucson, they're everywhere. Since being here, I wouldn't say it's my favorite kind of cactus, but definitely one worth photographing. This one stood about 35 feet tall!
I also believe cactus are much more fascinating in person ;)