When we first moved to Eugene, we were living in an apartment about a mile from where we are now. One day I noticed that someone had thrown a gloxinia in the dumpster. It had bloomed once and I think they didn't realize that it would bloom again if they kept it. I rescued it and, sure enough, it bloomed again.
It's now 6 years old and still going strong. I've got it in the bathroom and it blooms regularly. Here's the first bloom of this season.