I bought a single iris this year, the Siberian 'Steve Varner', which I got from a nearby nursery.
http://wiki.irises.org/Sib/Sib...
A friend of mine and I went to see the Siberians blooming in the mid-season and this one was just so beautiful. Turns out the same iris is on the cover of my favorite iris book, The Gardener's Iris Book by William Shear. That's a great bonus! I can't wait for it to bloom next year...