Dangerous spiders you've seen, heard of etc.?

[Koh]

I believe I've seen a Brown Recluse a couple of times. Immediately vacuumed them up upon discovery though, to avoid risk of poison. Those and Black Widows are really the only spiders one needs to be afraid of. The others can't kill, or are at least tucked away in some corner where they wouldn't harm one anyway, unless they're antagonized. They get rid of the other bugs, so having one just chilling in a corner is a plus in my book~