Call it a Jazzy Home Companion. Or don't, if doing so means your kids will avoid it like everything else good you put in front of them. Call it what you want -- 12 O'Clock Jump is its official name, and it's currently the best reason for Kansas Citians who don't follow the jazz scene to finally tune in.
Quiet on the set! (Actually, they didn't say that.)
As a musically based live variety hour that's free and open to the public, the midnight Jump has been going on since November of 2008.