The Oxford American Dictionary has announced that "podcast" is its word of the year for 2005. It will be interesting to see where this word is in another year, or 5 or 10 years. It will be in the dictionary next year; at the moment, when I do an all-dictionary search (onelook.com), it shows up in no dictionaries at all. Might be worth it to keep returning to that search to see when it shows up in the various dictionaries.
Also-rans for the year include "bird flu", which has appeared in the daily paper and radio newscasts about 523 times a day for most of the year, and "sudoku", of which I had never heard until the San Jose Mercury News abruptly started including a sudoku puzzle on its puzzle page, oh, maybe a couple of months ago? I'm a word person, not a number person, so I've been pointedly ignoring it.
However, I did just now discover that you can do interactive crosswords here courtesy of the Merc.