Well, modesty forbids, but a number I treasure. I am not as confident as people maybe think I am (particularly about sex and/or my singing and playing) - so:

An early girlfriend: "I've never wanted any man so much"
Another girlfriend: "That's wonderful"
Another girlfriend: "I've never come so much with anyone"
My late wife (not to me, passed on by a friend after her death): "I love that man so much"
A rival mobile disco operator, at university: "Great show [insert name]"
A black punter at a disco gig at a white social club in Nottingham: "You were the only person in here who did not stare at me when I came in"
Another student (black) at a disco gig I did at university: "Soul brother number one"
A girl (quite a dancer) at university: "You are the best dancer on campus. Andy has a little more rhythm but he is so limited in what he does"
I was kind of dancing off another guy in a nightclub in Croydon. He was good. I asked him if he was a professional dancer. He asked me if I was.
My daughter, then 13 : "Don't you hate it when grownups are right?"
Punter, at a minifest in the south east: "You have a terrific voice"
Punter, at another fest (comps with flaws are the best): "You have a terrific voice for traditional songs but we like tunes we can play along with".
Daughter and friends some years later (after her gig with rock band - they 20-ish me nearly 60): "Do you want to come on to a club with us?"
Another performer at a minigig in Nottingham: "What sort of guitar is that? It sounds like liquid gold"
A punter at same gig: "I really like your fingerpicking style" (my picking is less than basic!)
Another catter: "Are you recording anything? Nobody else is doing anything like it to traditional songs"
Martin Carthy: "Did you write that? Good song"
A punter at Sweeps: "I've never experienced anything like it. You joined in with your mandolin on a song I know you have never heard before because I wrote it and it fitted as if we had rehearsed it".
Tom Lewis, at Tenterden: "One of the high points of the festival for me has been your mandolin playing. You just joined in and it sounded like you had rehearsed it".
Adrian O, at Tenterden: "We did this the other night and [Name] found all the right notes".
A villain who is a friend: "I'd really like you as a driver on a job"
A barrister, now a very senior judge: "[insert name] has been the hero of this case"
A very very well known common law and human rights barrister: "I adopt Mr [insert name]'s note and find nothing to criticise in it."
A barrister and film executive producer: "If you think I am talking about copyright while [insert name] is here you have another think coming"