I love MacHeist!
I find software that I have never thought to try before, like journaling software, items to take my mind off of the stress of life, or even software to help me look at what is going on with my disk storage.
The current MacHeist has software for getting cover art for iTunes, DVD ripping software, clipboard management (including multiple clippings), and a FTP/SFTP/WebDav client.
If you are a Mac user (and who doesn’t want to be?), check out MacHeist.