Best $70 I have spent on digital photography

[unpopular]

yeah, uhm... anyone remember these:

which you would use to make these:

so that you had a better idea of how long to do this

based on what you've read while using this thing:

You people make it sound like this is something new...

 

[BlairWright]

I use the datacolor Spyder 3 Elite. Great tool and it will do multiple monitors.