Terry Pratchett will be signing Thud! and Where's My Cow (plus other titles) at Forbidden Planet 179 Shaftesbury Ave London WC2H 8JR (Tel: 020 7420 3666) on Saturday 22nd October 1-2pm.
If you can't make it on the day you can get copies from their mail order service. Details at
www.forbiddenplanet.com