DIY P3-733 (Via Apollo Pro 133 mobo) with Linux and XP Home - from 1999

Wife's DIY AMD Athlon XP 1700+ (AMD 760 mobo) with XP Pro - from 2001

My DIY AMD X2 4200+ (nVidia NForce4 chipset) with XP Home) - from Jul 2005

Kid's iBook 800 - from 2003
Wife's Sager P4-1.8ghz Laptop - from 2002
My HP Pavilion ze5270 P4-2.4ghz Laptop - from 2003

Kid's Mac Mini Core Duo - this year