I've had very good luck with Allium 'Globemaster' in my sunny front garden. I have just what they want: full sun and excellent drainage and they've rewarded me by multiplying. Anyone that's ever bought one of these bulbs can relate to how cool that is (the bulbs can run upwards $8 to $9 per bulb!).
I dearly loved this stand of breadseed poppy (Papaver somniferum 'Lauren's Grape') that I grew for a number of years. She loved my front garden as well; so much so that I'm still on a campaign of editing her out. So, under the category of "careful what you wish for" I present the lovely Lauren.