The fine folks at Fictionwise.com (aka eReader.com, or m.ereader.com if you're on your iPhone) are giving TiPb readers 25% off on any eBook purchase until February 28. (Their eReader app for the iPhone is already free -- iTunes link).
Here's the code you need to get your discount:
We should also point out, ALL of their New York Times Best Sellers include 100% Rebates or Rewards, which means if you purchase "Cross Country" by James Patterson for $9.99 (or any other NYT Title), they'll immediately put $9.99 back into your member account to purchase other eBooks.
And if you have any recommendations, drop them in the comments!