From the MAKE: Flickr pool

The VoiceShield from Spikenzie Labs incorporates an audio record/playback chip (ISD4003) and amplifier into an Arduino add-on device –

It uses a unique, yet very user friendly, way to access different sound bytes so it is easy to build a “talking” device. It can work with words, complete sentences, or sound effects. With the VS your Arduino can also build phrases “on the fly” that sound a little like an automated telephone operator, for example; “you” “entered” “one” “two” “three” “press” “pound” “if” “that” “is” “correct”.

This could be a lot of fun for robots and RSS reader projects just for starters – VoiceShield