I found this video by Dr. Paul that talks about forgiving and forgetting. He takes a realistic approach that states there may be some things that aren't forgiveable or that you don't want to forget. His focus is on relationships but what he says can be applied to a lot of different situations.
I would add that if you have one of those Level 10 issues and you don't feel as if you can forgive or forget, you still need to find a way to come to terms with what happened and who did it, so that your anger doesn't fester and end up eating you alive.
I'm curious as to what you all think about forgiving and forgetting. Please comment.
(Oh, and for the record, I don't get the whole martini glass thing either!)