Jef Taylor shows us a Phiddippus audax:

I don't pick favorites very often, but this is a very charismatic spider. Jumping spiders in general, with their big forward-facing eyes and little forelimb gestures, are pretty endearing. They are some of the only spiders that really seem to acknowledge humans, turning to face us when approached, putting up those front legs in a threatening manner, and then jumping away (or sometimes toward us) at the last moment.