I have a Nikon D40..which was discontinued in 2009, ha. When I have the money, I plan to kill it and replace it with a Nikon D5100 (Warranties ftw!). The only reason I'm wanting to replace it is because it's only 6mp. Not a huge deal to me since I rarely edit my photos and I certainly do not blow them up into large prints. Other than that, it works just as well as it did the day I bought it 90% of the time (once in a while it spazzes, but I bought it right after they were discontinued, so it's a 3 year old, obsolete camera).
That camera when I bought it, including warranties on the body and lenses, was $750. The D5100 I want is $850 with an 18-55mm lens, but I have one of those already. The body alone is $700 or $750.
The pictures below were taken with my D40, some with either a UV filter or circular polarizer.