I've heckled in the past, but really try to keep it toned down. It disrupts the speaker and does nothing but bad for attendees. Yes, they may laugh at it a bit, but if overdone, that's all they'll remember when they walk out at the end.

>Oh, he's done that too :)
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>JB and I often have a back-and-forth during a presentation, but it's always in fun. I always introduce him as my father, and he tells people that if I were his son, he'd ask for a refund. I just realized that for all the years where he and I have attended each other's sessions, we've never done a presentation together. Then again, he has trouble spelling SQL unless I spot him the 'S' and the 'Q', and the only think I know about mobile development is that I can watch Netflix movies on my iPhone. :)
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>Actually, something that steams me is when a speaker attends another session and excessively heckles and nearly sabotages the presentation. There are a few who do it and it is really bad. For all the talk in the industry (e.g. "dongle-gate" from last year) about bad male behavior at conferences (and yes, it is bad), what always flies under the radar is bad speaker behavior. Someone tried to do it to me once (I basically shouted over the person) but I know others who have fallen victim to it.