- don't read them
- get all the books, put them in a bin bag and shake vigorously with some lumps of coal, to give them that "used" look
- go through the books, underline things at random and make notes (also at random) in the margin such as "how true", or even better "wrong!"
- put books on shelf in office - never look at them again
This has worked for me, though I must admit that Searching & Sorting and stuff about random numbers are pretty good.
I got my copies free from Addison Wesley for doing some book reviews for them - not reviewing Knuth, needless to say!