Last summer, I created a bunch of rules for a one-off adventure based on the Max Payne video games. Unfotunately I lost the stuff in a Hard Drive crash!
For those of you who haven't played it, Max Payne has a Bullet Time mode that you can toggle in the middle of a fight. This slows down the enemies and their bullets considerably, allowing you to dogde their shots. The amount of time you can spend in Bullet Time mode is limited, but increased each time you kill a bad guy.
So my Max Payne Bullet Time feat allowed you to take a Heroic Surge action for free (it does not count against your daily uses) if you "drop" a foe that round (drop as defined by the Cleave feat). Essentially, if you keep dropping foes, you can continue using Heroic Surge without using your daily uses.