What is your favorite Eagle on US coinage?
While there are tons of designs, there are some basic themes which repeat. For example, the Heraldic Form with upward open wings, arrows, leaves, and +/- a shield is seen on many coin designs with minor variations (Kennedy half dollar, Liberty Head gold coinage, ASE, Morgan, PanPac, Barber quarter/half, etc.)
I really like eagle on the Peace dollar. I live around plenty of bald eagles, and the majority of the time, that's how they look. Sure, they're plenty beautiful when they fly (Sacagawea, SLQ, St. Gaudens), but the various transitional poses (Stone Mountain, Eisenhower, Walker, Lincoln & Alabama, Washington quarter, and the eagles of the Seated series) look a tad "forced" to my eye - especially the Walker.
I like the small eagles on early coinage though. I'll admit that they're an acquired taste. At first glance, they look like slightly majestic chickens maybe.
My least favorite is easy - the ridiculous thing on the reverse of the Franklin Half. How contrived.