Inside Britney Spears private life with the man who knows her best. Our exclusive with her boyfriend, Sam Asghari. Plus, what we've just learned about new trouble for Britney Spears and her father. Then, Brad Pitt gets candid about getting sober. The superstar who could save a daytime talk debut. And, how you can meet Oprah Winfrey. Entertainment Begins and Ends with ET.