Oh it's hard to remember the most recent. I grew up in a pretty daring family, everyone constantly pulling pranks on each other and daring each other to do ridiculous things, which I think is the reason why dares to me often don't seem that big of a deal. Granted, I won't do something I think is too dangerous or makes someone else's life harder, and I also won't do anything that's illegal, but like being dared to go up and talk to some random stranger or to wear something silly or to try eating a dog treat...that's all harmless, and yes, all things I've done.
The trick is to never do the dare for free ;)