I'm personally a huge fan of the Maryland flag. It reminds me of a coat of arms more than just a flag.
Looking at all of the state flags [1], it seems that the Virginia style "detailed seal on a blue field" is pretty common. Thinking back to my time in New Hampshire, I'm realizing that no one really flies the NH flag except for government buildings. In the absence of a remarkable flag, the late Man in the Mountain is usually the thing that you see used to symbolically indicate, "This is New Hampshire", if any symbolism is used at all.
South Carolinas is another flag that seems to get a lot of love from its citizens.
Looking at all of the state flags [1], it seems that the Virginia style "detailed seal on a blue field" is pretty common. Thinking back to my time in New Hampshire, I'm realizing that no one really flies the NH flag except for government buildings. In the absence of a remarkable flag, the late Man in the Mountain is usually the thing that you see used to symbolically indicate, "This is New Hampshire", if any symbolism is used at all.
South Carolinas is another flag that seems to get a lot of love from its citizens.
[1] http://en.wikipedia.org/wiki/Flags_of_the_U.S._states