Current setup

Using my 24" iMac as a secondary monitor for my 27" iMac, via ScreenRecycler. Works great.

 

The 24" has some yellowing on the LCD., but serves as a great second monitor for email, itunes and IM.

 

I also have screensharing turned on for the 24" so I can control both machines with one keyboard and mouse.

 

27" iMac 3.4GHz Quad-Core Intel Core i7

12GB RAM

256GB SSD + 1TB Serial ATA Drive

Wacom Intuos 3

Logitech Performance MX mouse

Ikea Desk

500GB External Drive

1TB External Drive

Done