aja:

Stunt Software - Overflow

Left to right, top to bottom.

Eventbox - social networking
Fontcase - font management
Amnesia - application, preference pane, plugin deleting
iPhoto
Stickies
iTunes
iSerial Reader - makes my betas fully usable, I try not to use it for evil
SystemLoad - makes my laptop fans quiet
IceClean - system maintenance
Transmit - FTP
Skitch - quick selective screenshots for blogging
Candybar - icon management
Safari
Papparazzi - batch screenshots
Utilities folder
Quicksilver - launcher (still trying to learn it)
Littlesnapper - most commonly used screenshot app

Eventbox, iPhoto, Stickies, Transmit, Candybar, Safari, Papparazzi, Utilities, and Littlesnapper icons by Iconfactory.

Amnesia, iSerialReader icons by me.

A detailed blog entry to follow soon, Overflow is one of my favorite Mac apps right now.