Josh Duhamel: I'm Nervous & Terrified of Being a Dad!

Josh Duhamel is serious in a suit while appearing on The Tonight Show with Jay Leno on Tuesday (August 27) in Burbank, Calif.

The 40-year-old actor chatted with Jay Leno about his fear and excitement about being a dad to his future baby with wife Fergie. Watch the video below!

PHOTOS: Check out the latest pics of Josh Duhamel

Josh was joined on the show by Macklemore, who wowed the crowd with a performance of “Same Love.”

“Why is JB SMOOVE sneaking into my dressing room for @jayleno tonight? Looks suspicious. #TonightShow @ohsnapjbsmoove,” Josh tweeted earlier in the day with a pic. Check out the funny pic below!