You can also engage the crowd directly. Momus is a good example. He performs his songs to track, and there's technically very little going on, but half the show is crowd banter, which can be tense and hilarious. When I saw him, he improvised biographical songs for $5 each.
Most of the hostility toward laptop musicians comes from their aversion to anything resembling charisma, but that's not a requirement of the medium. There are many paths up Mt. Entertainment, and not all of them require a Flying V.
In answer to your question, I was blown away by Tim Hecker, but that's mostly because I was drunk, and because the Empty Bottle has a much better stereo system than I do.