In my ongoing quest to let readers know about things at least 24 hours in advance, one of my favorite local bands is playing at DiPiazza's in Long Beach tomorrow night. They're called Ninja Academy and they fucking rule.Imagine if you will...two guys dressed as ninjas playing ferocious instrumental tunes with influences that range from the Minutemen to Coltrane to Slayer. Seriously.Now before you say, "Ryan, I'm not into costumed bands," remember: Ninja Academy are ninjas. They're stealth. On th