Justin Timberlake & Lady Gaga take Saturday Night Live!

Justin Timberlake & Lady Gaga are heading to Saturday Night Live for the May 21 season finale and the promos have dropped! In the new clips, Timberlake gets goofy with his [Expletive] in a Box duet partner, SNL cast member Andy Samberg.

Whether clocking in at Saturday Night Live as guest host or just showing up for a quick cameo, Justin Timberlake definitely ranks among the fave SNL visitors -- and not just for his work on Emmy-winning [Expletive] in a Box or Mother Lover, the songs he created with Andy Samberg's Lonely Island team.

Whether or not Timberlake is raising income for Homelessville, performing the Single Ladies dance in a leotard or playing Robin Gibb to Jimmy Fallon's Barry, he delivers. Possibly it is that Disney training...

Not surprisingly, with the success of Timberlake and Samberg's goofy musical stylings, it is no surprise the new promo clips feature the boys becoming silly. Right after Samberg begs to create out with Timberlake and "give the people today what they want" , the two guys dress as their fawning twin sisters and have a belated Halloween scare.

Absent from the promos is SNL musical guest Lady Gaga, but we hope she gets in on the laughs throughout the show this weekend. Throughout her October 2009 pay a visit to to SNL, the diva rumbled with Madonna herself in a Deep Home Dish sketch.

What could possibly be far better than one more new digital track from Justin Timberlake and also the Lonely Island guys? A brand new digital track featuring them and musical guest Lady Gaga!