The Black Eyed Peas star leaps out of his red spinning chair to join a young hopeful on stage, as the pair perform some Irish dancing - and we're pretty impressed!
We reckon this isn't the first time that will has practiced the dance, but his antics certainly get the studio audience fired up!
The third series of The Voice UK has been a massive hit with viewers since arriving back on our screens last month, and will is turning out to be quite the entertainer with his famous catchphrases and impromptu stage performances!
Also in tomorrow's episode (8 February), Ricky tries to do his best Gary Barlow impression, although he soon admits: "That was awful. Worst Gary Barlow impression ever." We'll leave you to judge that one!
As ever, we'll also be seeing more hopefuls try to impress will and fellow judges Ricky, Kylie Minogue and Tom Jones.
The Voice UK continues on Saturday 8 February at 7:10pm on BBC One.
Watch will.i.am dance below: