Not being an action guy, I'm going to have a hard time beating some of these, especially misanthropist.

But I did cut apart a Honda Accord headrest (the early-mid years that got stolen a lot) to try and dig out some flat bullets. Did y'all know that early Accord headrests--the kind on those two little ratchet posts with an internal metal plate--will stop 9mm bullets? Only reason I mention it.