will.i.am performed his new single '#thatPOWER' on 'Dancing With the Stars' last night (April 23), with a virtual Justin Bieber beamed in via holograph on giant video screens. So it was sorta like Da Biebs was there.

The performance was exactly like the actual video for the song. Will was flanked by his look-alike dancers, who were perfectly choreographed. Their hats -- not quite fedoras -- made them look they were on safari. Then there were those MC Hammer pants, with the low-hanging crotches.

While it was quite the spectacle, this performance was really about the intricate choreography and the incorporation of the virtual Bieber. Check it out above!