I'm a big fan of the books and films, but not enough to call myself an expert on any subjects. Therefore, I'll just be making grammar/spelling edits and the odd (and rare) informational edit. This wiki has already taught me a lot more about the characters and series than I ever knew before. I didn't start reading the series until '99, and finished Azkaban as the Goblet of Fire was released. The final three I have all read within days of their respective releases and the Deathly Hallows is the only book of the series I have reread. This is partly because I lent the first 4 books to someone I have not seen in nearly 10 years. I'm looking forward to the final movie(s) and will join the inevitable riot should either of them be delayed.
The Potter series started me reading. My favourite book is currently "The Life of Pi" by Yann Martel. Though preachy, I also like Dan Brown's "Angels and Demons". I've also been meaning to get back to the "Wheel of Time" series, but I got bored around book three or four.
Sci-Fi and Television
You can find me over at the Stargate wiki, a subject of which I have a lot more knowledge. I'm also a fan of the new Battlestar and I still watch the occasional episodes of Doctor Who and Star Trek (any of the series). I'm currently watching Defying Gravity...hope it doesn't get cancelled.