are we talking about escher? because everyone still knows who that guy is, even now. and he only did that to amuse himself, did them on napkins and scraps of paper. one trick pony or not, he did a good job as this guy does.
ideally, you can't criticize a guy unless you can either do what he does, or do it better.
bach was a one trick pony.
there are many that fit that and it doesn't matter, since they did not only a good job, but people know who they are, even now. i've been seeing this guys work for years. being on TED though doesn't impress me, because i've seen 7year olds talk at that thing.
---Mike Savad
MikeSavad.com