The first one I found was a black widow. I have never in my 24 years seen a black widow indoors. To find it in my living room in plain sight multiplied the horror by ten.
I had placed a box near my front door with a bunch of things I was going to take to Goodwill and apparently the black widow thought it was a good place to take up residence. I have since sprayed my entire exterior for spiders, which has been greatly helping decrease the amount coming inside. Even so, I still had one plop down into the dishwater as I was washing dishes yesterday (thankfully not a black widow). *shudder*
Next in line on my encounters list were the green caterpillars that suddenly attacked my tomatoes. I'd been noticing that the tomatoes were going down hill and couldn't figure it out, until I took a closer look...
Not being aware or on the lookout for these guys, I'd probably let them attack my plants for a few days. They blend in well until you look closely. And the squirt a nasty yellowish liquid at you when you try to pluck them off.
And lastly, the only "good" critter on my list, is the kitten I adopted two weeks ago. I've named her Nora. She keeps me company and makes my house feel more like a cozy home.