From the looks of it, if it is one of the few venomous spiders here in the US, it ould only likely be a Brown Recluse. I am not saying it is a Brown Recluse , just that it certainly isn't a Black or Brown Widow which are the only other two that are venomous in the States. Here is a video from You tube for a Brown Recluse. http://www.youtube.com/watch?v=6lwuItwsyP4
Regardless, as everyone else has already said, the particular spider in the picture won't be harming anything ever again. To quote Cousin Eddie, "If that thing had nine lives Clark, you done spent em all".