For a start, here's his most beautiful and most famous love song.
Before the performance, he cracks a lot of jokes - saying 'he doesn't drink anymore - he freezes the alcohol and then eats it as a popsicle.'
Also, listen how he changes the lyrics 'if I had it in my power'. Super-funny!
Oh yes and 'A Hard Day's Night' was No. 1...until Dean Martin recorded
Everybody Loves Somebody.
Moreover...
With the British Invasion ruling the U.S. charts, few had hopes that an Italian crooner who had been singing mainly standards for almost 20 years would sway many teenagers. Martin resented rock n' roll, and his attitude created conflict at home with his 14-year-old son Dean Paul Martin, who like many teenagers at the time worshipped pop groups like The Beatles. He told his son, "I'm gonna' knock your pallies off the charts," and in August 15, 1964 he did just that: Everybody Loves Somebody knocked the Beatles "A Hard Day's Night" off the number one slot on Billboard, going straight up to the top of both the Billboard Hot 100 and the "Easy Listening" chart, the latter for eight weeks.
https://en.wikipedia.org/wiki/Everybody_Loves_Somebody
And I like Dean Martin's confidence: 'I'm gonna knock Beatles down...'
Also, another great favourite of mine -
Gentle on my Mind.
Again, after the nice performance, he speaks to the audience to thank them for their comments & letters after last week's show, adding... 'That's little strange... we weren't on last week.'