America’s Got Talent, So You Think You Can Dance, Primetime Nightline: Celebrity Secrets

America’s Got Talent, 9 p.m., NBC

Four YouTube acts move forward. The time slot for this show is killing me, because I want my 10-year-old to go to bed at 9:30, and he argues like Daniel Webster every week as to why it is unfair for him to go to bed in the middle.

So You Think You Can Dance, 8 p.m., Fox

What a great top 4: Melanie, Sasha, Marko and Tadd. Love it. Looking forward to tonight’s all-stars as well, with Joshua and my beloved mark taking the stage. I am still predicting Melanie the winner, but ….

Primetime Nightline: Celebrity Secrets, 10 p.m., ABC

“Famous and underage.” Ok, they have no secrets. We even know on what days they don’t wear underpants.