Happy Birthday, iMac
The specs for the original iMac were nothing to laugh about then, but it's certainly laughable now. The G3 iMac sported a 15" CRT monitor (resolution of 1024x768), 4 GB hard drive, 233 MHz PPC G3 (750), 32 MB of RAM (expandable up to 128, whoa!), 56 Kbps modem, 24x tray-loading CD-ROM drive, Mac OS 8.1 (or 8.5 on later models). This monster weighed in at 40 pounds!
The original design followed the iMac until 2003, when Apple retired the design for the "goose-neck" iMac G4 (although as Evan reminds us in the comments, the 'gumdrop' form factor lived on in the education-market model eMac). In 2004, Apple created the iconic design of the iMac G5, which is the same major design style they use for the iMac today.