Love, love, love me some hardy Geraniums. I have Rozanne (can't believe she's still blooming - one tough cookie, I planted her in late May and she's been blooming non-stop for a couple of months now) Orion (taking a long time to really settle in, got only 3-4 blooms this year, second year) Johnson's Blue (my favorite of the flowers, if not the plant itself) Wargrave pink (barely survived a hot and dry summer - only one plant out of 3) Espresso (milk chocolate leaves, no blooms yet) and a NOID that might be Sanguineum - that dark pink that the catalogs call 'rose' - blooms for quite a while and is spreading nicely (pictured below).
Most of mine are in mostly sunny areas except the Rozanne, which is under some viburnum with an eastern exposure.