I once played in a 3.5 campaign where we actually used BESM added in. It was one of the most fun games I ever played in.
I made a character that could leap 750 feet, Perform 75 ft. radius AOE sonic blasts around himself that paralyzed foes and launched them 300 feet into the air.
We were attacking a giant wall covered in soldiers with rifles. I jumped on top of the battlements and launched a huge number of enemy soldiers into the air--so many in fact that when my ally flew up high above the wall and got shot at by the remaining soldiers on the other side of the wall, he got a cover bonus from all of the bodies I had just launched.