Keaton is at his best here, which means that his mind appears to be working at warp speed, and with a berserk, reckless lucidity.

NEWYORKER: The Paper

Just as usefully, if not more so, the two parts illuminate each other in intricate, specific ways, explaining why, for instance, a Japanese prisoner of war went berserk, or what happened to a GI after he was taken captive.

WSJ: Film Review

And somehow, this suggested a strange, slightly berserk piece that had both charm and humor, but also a certain personal poignance.

NPR: John Adams: 'Grand' And 'Gnarly' In Concert

In a Germany-style hyperinflation, volatility goes berserk as everyone gets rid of rapidly depreciating money, as if it were a hot potato or a bag of toxic spinach.

FORBES: Alexander Hamilton Got It Right

Last year, in the middle of the night, a forty-pound raccoon fell through the chimney into the basement and went berserk trying to escape.

FORBES: A Lesson In Keeping An Elderly Parent Safe In Their Own Home