To add to the list:
For signal estimation and detection, check out the book by van Trees: http://www.amazon.com/Detection-Estimation-Modulation-Theory-Part/dp/0471095176
For Signal processing, my personal favorite is the Mallat book: A Wavelet Tour of Signal Processing:
If you really want to check out state of the art stuff, also don't be scared to try to pick up some REVIEW articles from some of the IEEE journals.
Cheers!