There is a house down in Patagonia (an hour & a half drive south of Tucson) that graciously opens their backyard to birders interested in visiting their feeders, asking nothing in return except a donation for the purchase of sugar. I've been visiting their yard for many years, and its a great place to see some of southern Arizona's many species of hummingbirds.
I believe you can find over nine different species of hummingbirds visiting their yard over the course of a year. Several of these species are at the top of their northern range.
These are all snaps taken with my P&S camera during a trip down there on Thursday (taking a quick break from my study/search). I'm quite pleased with how the Violet Crowned picture came out for using such a small camera/lens.