My favorite encore might be one time I saw Sincere Engineer. Someone in the audience shouted "play corn dog sonnet!. That's one of their "hits" as far as small bands go.
But the band had already played it earlier in the set, and said so. The audience person shouted back "I was late! I missed it!"
The singer went, "well, I guess we could play it again if everyone wants to hear it again"
The crowd cheered , so they played it again.