1.
When he got off the plane and grasped Melania's hand for approximately one second.
2.
When he gave a salute to America.
3.
When he fist-pumped on the way to his seat.
4.
When he really got into "God Bless the U.S.A."
8.
When he really got into the most exciting act of the night, 3 Doors Down.
9.
And swayed his head to and fro.
10.
When he chatted to Ivanka when the first bars of "Kryptonite" started.
12.
Though not the whole time...
13.
When he smiled at the strange-but-fun robot people.
14.
Although Melania didn't seem to like them too much.
15.
When he got his whole body into it during the performance by the Piano Guys...and even sang along!
16.
When he sat pensively listening to Toby Keith.
17.
And finally, the audience's reaction to it all.