Worst thing I have seen was in Little Rock. A freaking spider that had a 5 inch leg span(Texas Brown Tarantula). A personal request from me to the people in Texas please come get your giant spiders. Thank you.
On hot July days in Little Rock you can see the Tarantulas, sometimes 30-40 at a time prancing quickly going across streets in Little Rock. Not that all the gangs weren't scary enough.
Here in Hot Springs I have yet to see one, but Black Widows are prevalent here on the mountain.