Rampaging Bull Rush

Improved Bull Rush (PH) , rage ability, size Large or larger (goliaths qualify by virtue of their powerful build racial trait),

While in a rage, you can attempt to knock down any creature that you successfully bull rush (that is, that you push back at least 5 feet with a bull rush attempt). You take a -4 penalty on your Strength check to bull rush the opponent, but if you win, the opponent is knocked prone at the end of the bull rush. Bull rush rules can be found on page 154 of the Player's Handbook.

While in a rage, you can attempt to knock down any creature that you successfully bull rush (that is, that you push back at least 5 feet with a bull rush attempt). You take a -4 penalty on your Strength check to bull rush the opponent, but if you win, the opponent is knocked prone at the end of the bull rush. Bull rush rules can be found on page 154 of the Player’s Handbook.

You can use brute force to slam into and knock down your enemies.