Casey Carlson: Just one night away from going back to making bubble tea for good.After a horrible, seizure-inducing Hollywood Week, I was actually sort of excited to get this show on the road and hear the offerings of The Best Singers in All the Land, as decreed by the "experts." I should have known better than to be optimistic. Have I learned nothing over the course of eight seasons? Two hours and 12 singers later, all I wanted to do was lie down, put a cold compress on my head, and call my mom