Due to the way SO loads questions and then hides 'ignored' tags, I will occasionally see a question (for just a split second) that I actually have some interest in. It would be really nice to be able to temporarily disable my ignore tags so that I can see all the questions in the queue.
I don't know how long it's been like this but I've noticed that the
hide ignored tags checkbox is there, only it is hidden. Maybe the team is considering adding it but isn't complete yet. As far as I can tell, it's working fine enough.
I wrote a greasemonkey script to unhide it. Now you can toggle hiding these questions directly from the question view pages. I plan to do more with this in the future including doing something about those also marked interesting.