Paul Theroux, a travel writer and former PCV in Malawi in the 1960s writing on why he served and what it means to work in a community really struck a note with me regarding my decision to serve:
http://peacecorpsonline.typepad.com/peacecorpsonline/malawi/
If you can get past the voice over by a certain someone, also check out:
http://www.hulu.com/watch/64450/i-am-because-we-are...a really moving, informative peice on the history of poverty, life and love in Malawi