Awesome Music: Honoo no Sadame, the opening theme. To have a taste, here's the original version and here's the Operation Extend edition.
Also Tetsu no Lullaby, the opening of Pailsen Files.
Complete Monster: Colonel Yoran Pailsen is a ruthless Mad Scientist who crafted an experiment on the world of Sunsa that involved burning hundreds of children alive to determine who had a unique "survivalist" trait. Obsessed with creating the "perfect soldier", Pailsen directs his private unit, the Red Shoulder Battalion, to commit wartime atrocities and even fight to the death among themselves. In order to test his theories, Pailsen even manipulates the head of the military, Fedok Wockam, into starting a pointless battle that leaves 120 million people dead, obsessed with furthering his research no matter the human cost.
Fan Nickname: "Dead Chirico", for Chirico whenever he's unconscious. This comes from the horribly Off-Model way he's drawn whenever that happens.
Flanderization: In the original series Chirico is a talented, if traumatized, special forces soldier with a helping of luck who loses as much as he wins. Come the OVAs, he is a nigh immortal reality warper who simply cannot be killed no matter how ridiculous the odds.
The Problem with Licensed Games: Surprisingly averted with the Playstation 2 game which is an extremely polished, well-paced action game that covers the entire series and Shining Heresy, and allows you to use practically every AT featured in the series.