SERIES PREMIERE: This newest HBO sketch series carves out some interesting territory, and finds some unexpected (as well as some very expected) targets for humor. But tonight’s opener, specifically, scores more in terms of premise than in actual laughs. It’s worth keeping an eye on, though, to see how, and if, it develops. For background info on A Black Lady Sketch Show, see the report from TCA's Press Tour with Mike Hughes' Open Mike.