I quite agree with Tamar though about Old Rincewind's exploits he always seems to be running away from something doesn't he, he's not my favourite character, but he's ok i suppose. I can't wait to re read all of them all in order to see if i like them any better.
Definitely reread them!
I don't mind Rincewind; I minded the ending of the first book, which wasn't a cliffhanger at first, it was just The End, until Sir Terry wrote the second novel. It just didn't fit with the rest of the book. I still don't understand why it was so popular with that ending.
I believe I actually like Rincewind more than Sir Terry does, because I do see some development in his character. Rincewind does more than just run away. He will stand up for himself and others, and he eventually figures out how his life works and learns to deal with it emotionally. I realize that all that makes more sense if you are into the idea of figuring out your life pattern and working with it, which is more of a Granny Weatherwax attitude than it might seem at first. If you can gain enough distance to see what kind of story you seem to be acting out, you can get some control of it, or at least understand it. Rincewind went from a drop-out to having a professorship with about as much security as any UU professor can expect. Given where he started and his peculiar talents, that's not bad.