I don't know exactly what type of spider he is but he's one of those guys that will jump at you rather than run. He came up over the top of my monitor and goes bat shit crazy trying to catch the cursor at his feet.
He'll get frustrated and just sit there tapping his feet and looking left and right and then run to the back of the monitor and creep over the edge in attack readiness then suddenly dash out to get the cursor and chase after it in circles for a minute or two then get bored and just sit there frustrated again.
Hours of good cheap entertainment if you ask me and better than most video games on the market because it's real life interaction. I like him and he's my friend.