Ok, not really a "Hot Deal", but some people STILL don't know about this.
Ok, if you've ever had a bank charge for going over your overdraft, having a cheque bounce, etc, you can claim these back, for free.
There's a lot of "no win, no fee" companies that have appeared recently, that take sometimes more than half of the money back when they get it for you.
Many many many people have done this themselves, for free, with the help of various sites on the internet, one of these is the Consumer Action Group. Perhaps not the best site for everyone, but it is [generally] a pretty good site with lots of helpful resources.
There are other sites, but this is the main one I've looked at as well as http://www.moneysavingexpert.com
, but some of the info on MSE isn't quite correct, or rather wasn't last time I looked.