Thanks to Mactracker I have all the known information about most of Apple's products on my iPod. I also have it on my Powerbook, but that isn't as cool.
Now, you might be wondering, 'Scott, why would you ever need to know what the maximum amount of RAM a Performa 460 could use while on the go?'
Chances are I will never need to know that, however, if the need does arrive I've got it covered.
All you windows users aren't left out of the fun, there is a Windows version of Mactracker.
The best part of the program? It includes the startup chimes of all the Macs! Neato!