I never thought they would release that...
This is not a specific topic, more a question as to what has interested you that you thought would never be released, or for that matter never considered as far as modelling is concerned.
Three releases that pleasantly surprised me as far as content were concerned were the two Northrop Flying Wings and the Valkyrie that AMT released. OK, I have no idea of the quality of the kits having never started them but I was very pleased to be able to get them (especially as I live in the UK). To a lesser extent I suppose there are the two AMT Tigercats as well.
Another interest of mine is the "fantasy" aspect. Nothing too outrageous I hasten to add. I refer to the German "what ifs" that have been releasef by Dragon (the Me 1011 I think it was called) and Revell (they must have release at least four, including the asymmetric Blohm & Voss).I suppose to a lesser extent the Gotha Go 229 by Dragon and the Do 335 by Tamiya would also fall into that category as does the Hasegawa Kyushu J7W1 Shinden (OK so Japanese aircraft as well!). To see the latter was a surprise to say the least.
Anyone else been pleasantly surprised by a manufacturers choice of release. I suppose I am really referring to injection moulded as opposed to vacform as the latter tend to go for the slightly less mainstream model anyway.