Oh yea... that reminds me. I replaced my thermostat last year as well. It was such a small DIY job I forgot about it. I also replaced the front control arm bushings with polyurethane ones. The old ones were still in good shape at 150K (mostly highway).
It's a good idea to flush all of your fluids periodically as well. That's 2-3 years depending on usage. That includes differential, transmission, powersteering, coolant, and brake fluid.