[merylsilverburg]

Yes of course I would watch a series more than once and have. I mostly watch a bunch of the ones I own over and over again and this usually happens when I'm addicted to the series. Once my "obsession" dies down a bit, I might not see it for a while.
And yes, I would watch a series a second time to see if I like it. Like Evangelion...I didn't like it at all the first time I saw it and I just recently got into it and I think it's very good. (Maybe because I also saw the dub the first time too and sub the second time. )
I think what draws people to watch a series over and over again is probably the characters and their relation to them. Like how similar the characters are to the viewer. Also, another factor would be the story....stories such as fantasy, action and so on...many people have dreamed or enjoy such things as a child. And to see a story like that really can make that person just go nuts and really enjoy watching the anime again.