Why isn't there a question mark at the end of Who Framed Roger Rabbit?
I don't recall where I read it, but the writer has explained that there is no question mark because the title isn't intended to be a question. The film literally tells the viewer who framed Roger Rabbit.
In terms of film titles (like Roger Rabbit) I'm sure I read somewhere that there was a superstition about it – some films with question marks had tanked and thereafter it was considered unlucky. ...?
(As a side note, when ripping vinyl tracks to digital, I find Audacity doesn't let me put a question mark in a track name ... often I'm happy to let it slide without; other times I feel it really needs some sort of punctuation, and in those instances I sometimes paste in an interrobang since – oddly – Audacity is perfectly fine with one of those instead.)