I know that a lot of you are scrambling to spend your training grant money by next week. If you think you'll ever need to use R, I strongly recommend buying this book: Introductory Statistics with R, by Peter Dalgaard ($48, Amazon). I picked this up a while back and read through most of it in a day or two. It's not the best book to learn basic stats, but if you already have some background it's a great resource for learning how to do analyses in R, suitable for people who've never used R before. Incidentally, the author is an editor of the previously mentioned R journal.
You can actually view most of the content from an older edition of this book online for free at Google Books.