Things I always forget

I always have problems with remembering some things, the worst are names. When I meet someone (due to a friend) we introduce ourselves and for about half an hour I remember their names. The problem is that when I try to ask them something I have to work around that I don't know their names. It can be quite difficult sometimes but I'm getting pretty good at it.
Some other things that I forget are all sorts of dates. These can be anniversaries, appointments and historical dates.
I think that the funniest is when I forget that we have written a test and/or if the teacher had already corrected it, so it is always a surprise for me.