Justin Timberlake was the couch guest and performer on 'The Ellen DeGeneres Show,' but she didn't intro her smooth and stylish guest in a boring or traditional way.

Instead, she played a game, 'What's in the Box,' which is sort of like JT's famed 'SNL' skit, 'D-- in a Box.' The largely female crowd went nuts at the big reveal that it was JT in the box. When he sat down for his chat, he shared the best decision he ever made (it's romantic) and performed his latest 'The 20/20 Experience' smash 'Mirrors.'

JT talked about being married to Jessica Biel, revealing, "Every once in a while, I can catch a glimpse of her when she doesn't see me looking and I have this moment, where I am like, 'If you never make a good decision, if you only make bad decisions for the rest of your life, you made one really good decision.' It's nice to marry your best friend. It suits me."

No, it 'Suit & Ties' him! Thanks, we'll be here all week. But seriously, swoon!

Ellen also gifted the singer with a big framed photo of them locking eyes from a past appearance on the show. JT mentioned that he and Biel still haven't hung anything over their bed yet, so this may just what they use for boudoir decor.

The crooner then performed his new hit 'Mirrors' with his band The Tennessee Kids.

Watch Justin Timberlake Talk Marriage to Jessica Biel on 'Ellen'

Watch Justin Timberlake Perform 'Mirrors'