But in case you haven't heard, Ben's also the star of a new Broadway show, Dear Evan Hansen.
The show, which opened on Broadway December 4, is already a hit. So it's no surprise that celebrities including Zac Efron, Mindy Kaling, and Emma Stone are flocking to see it.
It's gotta be pretty cool to have all these major celebs coming to see your show, but what's more special than some old friends visiting?
At last night's performance, Ben's former Pitch Perfect co-stars Skylar Astin and Anna Camp stopped by. And how cute is this picture?!?
Ben was definitely psyched to see his "shmom" and "shdad," who are clearly some of his biggest fans.
They also visited Ben when he was in Book of Mormon from Jan. 2014 to Jan. 2015.
