I've had the same computer since 1994. It's been in a constant state of evolution since I bought it, however.

It began its life as an Intel 486-DX (33MHz) with 4MB of memory, a 200MB hard drive, and a 3x CD-ROM. In its current incarnation, it's a Pentium 3-850MHz with 128MB of memory, 30GB hard drive, and a couple of DVD-ROM drives. Next month, it enters its cocoon and emerges as either a Pentium 4 or an Athlon XP, whether it likes it or not.