Since I've come to Maryland, I've come to appreciate the beauty of the Maryland flag:
You'll note the distinctive coloring. No other state features black so prominently, and only three other states use yellow. The first I remembered from a ski trip to Santa Fe in high school:
The second I recognized because it just says "Arizona":
But the third yellow flag I don't recall ever having seen before taking the bar:
Two points if you guessed you were looking at the Great Seal of the State of New Jersey on a buff field. I struck up an interesting conversation with a security guard at the Baltimore Convention Center trying to guess which state was cool enough to use a buff field. We actually used that word, too: "buff." Thankfully, he remembered that, during the American Revolution, George Washington ordered the uniforms of the New Jersey Continental Guard to be dark blue with buff facings. And then it was all clear.
But, of course, nothing compares to the Texians' flag at the Battle of Gonzales, where they dared the Mexican Regulars to take back the lone cannon defending the Mexican Constitution of 1824:
Unbiased historians on the payroll of the State of Texas tell us the Texians fired one cannon shot, and the Mexican Regulars went running back to San Antonio.