Last night, the iHeartMusic Awards in Los Angeles, Calif. attracted every major artist that's graced the top of the charts in the last five years. The ceremony had its highs (Rihanna's muppet green fur coat and dance routine) and its lows ("Iggy Azalea debuts a new accent during the opening bit of her iHeartRadio performance," the kids at ONTD! commented), but here are the five things you need to watch in order to keep up with the convo at the office water cooler this Monday. 

1. Rihanna Performs "BBHMM"

First up, Rihanna's first ever live performance of her hyped latest single (though, it could be argued that her brow game received more hype), "BBHMM," complete with helicopter prop and some badass choreography: 

2. Iggy Azalea and Jennifer Hudson Play Cops and Robbers With "Trouble"

3. Nick Jonas Continues His Quest to be the Next Justin Timberlake

4. Madonna Performed "Ghosttown" With Tay Swift on the Guitar

5. And Finally, Justin Timberlake and Taylor Swift Sit Together, Thrill the Internet