Mac Life has a really great article about the history of the iMac.  I have had 3 iMacs myself.  The first was the original bondi blue model.  I remember being a little concerned that I no longer had a floppy drive, and that the only expansion ports that I had available were 2 USB ports.  Later, I realized that I didn’t need a floppy drive after all, and that was long before I started to worry about backups.  A year and a half later, I purchased an iMac DV.  Just after I started working for Apple in 2003, I bought my last iMac, a 17 inch iMac G4.  I loved the flat panel display.  After that iMac, I never went back to a CRT.  When I bought my PowerBook in 2005, I stopped buying desktop Macs until this past August when I bought a Mac mini to use as a test machine for Snow Leopard Server.  The Mac mini doubles as a test platform, and a personal computer when I need to work with a larger display than is provided by my MacBook Pro.  Every time I go into an Apple store and see one of the new iMacs, I can’t help but want one.  I find myself mentally trying to figure out how to fit the purchase into my budget, and justify it at the same time.

Oh well…  Maybe Someday.

The Complete iMac History — Bondi to Aluminum | Mac|Life.