I'm not really supposed to be buying books for myself because I am swimming in TBR (to be read) books, but (being the bibliophile and bookaholic that I am) it's kind of impossible for me not to slip every once in a while.
Yesterday I ordered Andy Pruitt's Complete Medical Guide for Cyclists.
It's gotten rave reviews over on the Team Estrogen forums and, well, I can't begrudge myself a reference book, can I? :)
I also ordered another book along with it,
but I won't give the details here because I'm planning on using it in an upcoming themed book swap (again, if you don't know what a swap is, check out the SWAP FAQ).