AceShowbiz -

Aside from singing his new "Pusher Love Girl" single and talking to fellow "Saturday Night Live" performer and comedian Jimmy Fallon about his current tiff with Kanye West, Justin Timberlake brought along his comic stunts to "Late Night with Jimmy Fallon". In a special number with Fallon and his Ragtime Gals, JT sang his old hit "SexyBack" for a hilarious barbershop quintet performance.

For the second night of his weeklong guesting on the top-rating show dubbed as "Timberweek", the 32-year-old singer delivered his lethal combo of vocals and funny antics via his 2006 hit. His a cappella performance of the "FutureSex/LoveSounds" album track with Fallon and friends closed out the show.

Wearing a multi-colored striped blazer and similarly-patterned hats which stood out more with white pants that completed their outfits, the Ragtime Gals quintet turned the otherwise sexy R 'n' B ballad into a funny barbershop rendition. Although it did not require as much acting talent as the skits he recently delivered on "SNL", it was as much a skill for JT to keep his composure and not break out laughing while doing the song with Fallon & Co.

And like on the previous episode when he sang a track from his forthcoming new album "The 20/20 Experience", the pop/dance superstar showcased onstage his latest single "Mirrors". Aside from promoting the new studio album on Fallon's late-night show, JT will also have a one-hour TV special where he will reportedly premiere his new music video.