Cape-Flapping
-verb
1. all flash, no function. Expending all power but with little or no productivity

Derived from the movie "Dark Night"; in which we see our beloved Batman riding his Batmobike through Gotham; notably the only time you'll see our hero's cape moving faster than him.

2. an excessive ruckus created with nothing to back it

3. overly hyped with a disappointing result
"I expected that Batmobike to tear through Gotham City, but all I saw was a Bat-ton of cape-flapping."