I'm replaying Shenmue 1 again, and found you can get some pretty funny and rewarding convos asking people about Heartbeats.
For example, when you ask Nemoto-san
"That song, "Like a Feeling" is totally wasted on a shit-hole like that!"
Heh, nice reference to the cassette tapes and amusing!
Also the one with Noriko is quite funny-
Ryo: "So, do you know where it is?"
Noriko: "No...the name sounds nice though..."
The ones with Minako-san are funny because they're totally irrelevant--
Minako: "Hey Ryo, have you ever eaten super-spicy curry?"
Ryo: "Uh..no..."
Minako: "Aw, that's too bad for you."
Minako: "Hey Ryo, have you ever used a disposable camera?"
Ryo: "Uh..no..."
Minako: "Aw, that's too bad for you."
Minako: "Hey Ryo, do any of your friends have CD players?"
Ryo: "Uh..no..."
Minako: "Aw, that's too bad for you."
But the funniest Minako convo has to be--
Minako: "Hey Ryo? The other day a famous person came in here...I can't remember her name though..."
Ryo: I see...
There's others I'm probably forgetting, I'll post again if I remember.