The Bruno Mars tribute to Prince was amazing. I couldn't find a video of it this morning to post, but if you can find it, it's well worth a viewing.
But to me, this was the funniest part of the show. From the RAMP Newsletter...
As has been the case for the past several years, 75 of the 84 Grammys were awarded before the broadcast, leaving lots of room for performances and memorable "Grammy Moments™®℠©... like this one: twenty one pilots, who dropped their tuxedo pants on their way up to the stage to accept their Grammy for Best Pop Duo Or Group Performance for "Stressed Out," honoring a vow they made to themselves years ago as starving artists that if they ever won a Grammy they would do so in their underwear. In closing, Tyler Joseph offered this sage advice to other struggling artists, declaring, "Anyone from anywhere can do anything."