Over the years forums on bonsai have had a few lingering (and sometimes silly) threads. One that has surfaced off and on was a thread about training non-traditional plants, Peppers being one advocated for bonsai training.

Anyway someone has actually gone and done it with a display on in Gardenweb, in the Bonsai forum.

They (peppers) are a better match for bonsai training than even speculation wondered at.