I know something about $327.68 Knuth reward check. However, I cannot find a comprehensive list of people rewarded for finding errors in TeX. I do know, that among them is Bogusław Jackowski (Twice, ...
I admit that this post is purely idle curiosity. But I recently stumbled upon a little factoid saying that the TeX error "Interwoven alignment preambles are not allowed" has the following explanation ...