This is just a thread to share your favorite Transformers toy engineering moments. For me I guess it was the intricate Car robots/RID toyline particularly JRX/Railracer. Another favorite was the clever use of the Classics Sideswipe/Sunstreaker/Doublechanger mold. I'm guessing the Generations Wheeljack/Tracks mold is similar but I've never played with this particular mold. Fansproject Bruticus deserves a special mention for turning a mediocre mold into something amazing. Some of the parts could be considered kibbly but for the most part it's self contained and every part had some utility. I want to reserve judgement on TFC Hercules, but based on Exgraver alone it's really promising.