kartoffelngeist wrote: a lot of folk see it as what derren does...
This is quite a common problem. Anything which is included in a TV show by Derren, Dynamo or Blaine is likely to have been seen and remembered by some of your audience so it can seem as though you're just copying. Personally if I have, or buy, an effect which is given TV coverage, then it goes in the drawer for at least 12 months to give the spec memories time to fade. Even then the presentation and back story (if any) has to be radically different. Even then it may still be risky - moons ago I prepared Oz Perlman's 21st Century Phantom for a performance, safe, or so I thought, in the knowledge that it had been a while since anyone performed it. Halfway through my slick and professional (!) presentation, a guy said out loud, 'Oh I saw this on telly last night, it's Elvis Presley'. Fortunately I'd stuck with the original idea and 'it' was John Travolta so i was able to confound the guy as well as the rest of them but it was a close thing! I'd recorded the TV show in question and watched it as soon as I got home and the reveal was indeed Elvis - if only I'd watched the bloody show live!!!!