A counselor at a conference I attended recently said she can write up to 12 letters of recommendation a day during her busy season by using voice recognition software. In fact, she said it was the best $100 she's ever spent. Instead of typing, you just speak–the software types for you.
I've never used it, but I did find a review for a popular model here on CNET.
If you write a lot of letters of recommendation, it might be worth the $99.