The stars were out at NBC's big fall kick-off party, but no one was having as much fun as Jerry Springer and Piers Morgan.

The two opposing sides of some very emotional dice on America's Got Talent actually get along famously ... when they're not still bickering over whether a certain 4-year-old contestant should've gone home.

We talked to Jerry and Piers about what they're looking for on the show, whose name gets chanted the most and why Springer has become a total softie.