This machine I'm typing on has an Intel P4/3.06; also in this room are the "new" video machine with dual Intel 2.66 Xeons, the "old" video machine with dual AMD Athlon 1600MPs, another Intel P4/3.0 machine that I'm mostly using to run a couple of DVD burners at the moment, an Intel Celeron/2.8 SFF portable video server, and a bunch of laptops (almost all Intel CPUs).
Downstairs it's closer to an even mix between Intel dual-CPU systems and Sun dual and quad CPU systems, with a couple of Ross CPUs thrown into the mix (including one system with four Ross CPUs).