I saw this question that was closed as "too broad" where the OP asks for how to replicate a big complex animation (the shredder animation in Passbook for iOS).
I did that myself about a year ago and got quite far before I lost interest in it (screenshot below). Should I vote to open a bad question just because I may have some code that would help or would the answer be to bad that it wouldn't be a good answer for anyone else (200-ish LOC)?
My question is mainly about this particular question but I think the question "is an answer to a bad question useful to other people" can be interesting for other similar situations as well.