Terry Pratchett's Thud! debuts quite impressively at number 4.
Terry Brooks' High Druid of Shannara: Straken drops 6 spots, finishing the week at number 11. This newest Shannara novel has spent 2 weeks on the NYT list.
Susanna Clarke's Jonathan Strange & Mr. Norrell is up 5 positions, ending the week at number 28. The novel has been on the prestigious list for 2 weeks.
And just a side note to mention that Raymond E. Feist's Flight of the Nighthawks made an incredible debut on the London Times bestseller list, climbing up to number 8. Interestingly enough, Feist has recently been a lot more popular abroad than in North America.