Still occasionally using using my D200, in addition to my other "obsolete" cameras, D40x IR-720nm, D5100, D7100 (the latter is my newest body and I guess also "obsolete" in term of having been superseded by a newer body, if not a classic).
This image from my D200 and 105mm f/4 AIS of a wood frog (captured for our Ph.D. student Don who is studying them) was selected over those I captured with my D5100, the latter was my newest body at that time:
Wood frogs stay frozen solid over the long winter months in Alaska, just to thaw and jump around as if nothing had happened in the spring.