SCOTTG_  Excellent, simple word processor. Runs quickly, and all the important preferences are easy to find- they surround the document- brilliant.  
(Version 1.2)

SCOTTG_  Simple concept, great execution, great price. Just what I need at work so I can turn the volume down unobtrusively when the boss is trying to talk to me!  
(Version 3.0.9)

SCOTTG_  Sente is by far the best bibliographic program that I have used. It even runs on my poor old 400MHz G4 laptop. Some of the reviews on this site seem to be for quite an old version of Sente- now it inserts citations into documents and builds bibliographies- but I think it's real strengths are in the way that it organises papers, and makes everything so searchable. The automatic download of pdfs based on pubmed or doi search is an added bonus.   
(Version 4.1)