I love all the Dynasty Warriors, Samurai Warriors, and Warriors Orochi series, even if some of them are a bit slow; in Warriors Orochi 2, there's a weapon trait called Almighty which basically doubles all of your weapon bonuses when your Musou gauge is full, and if you have 10 Speed bonus already, especially with a fast character, you have to mash the attack button nearly five times per second in order to keep the combo. If you use Sun Wukong with an Almighty 10 Speed weapon, you can breeze through practically any level on Hard mode within two or three minutes.

DW5: Empires and Dynasty Warriors: Gundam 3 are my favorites

I'm probably going to actually go out and buy this one for PS3 (SPOILER)instead of just downloading it and playing it on my hacked and JTAG'd 360