The recent Evil Interview Questions
thread contained heavy use of spoiler tags and revealed what I think is a bug with the spoiler tag and/or the code tag (or at least an undesired feature).
I use the "Perl-Blue Theme" theme container and have spoiler tags set to "table". So normally spoiler text is in black on a black background and the way to view is to highlight/select the text.
Apparently the spoiler tag does not override the color used for text contained within code tags. And that means that using the table view for spoiler tags is partially broken since any code contained within spoiler tags will be visible (just on a black ground instead of the grey background common to the "Perl-Blue Theme").
Anyway, I thought I would mention it.