According to the NASA website, the Galileo spacecraft will shorlty be manoevured into a descent path which will send it plunging into the Jovian atmosphere. This will mark the end of a 14 year long mission ranked among NASA's greatest successes

According to this article, heat given off by the plutonium-powered radioisotope thermoelectric generators which power Galileo could melt ice on the surface of Europa and allow Earthern bacteria to breed when the craft's hull ruptures on impact. This would contaminate the moon and make it very difficult to separate any later-discovered extra-terrestrial bacteria from the introduced sample.

Galileo has provided us with some extraordinary pictures of Jupiter and its moons, and the mission has developed some emotional significance for many NASA technicians. So much so, that they will be holding a wake for the probe after its impact on Saturday.

A live video webcast will be made available on the Galileo site here, so you can catch all the gory details. I'm assuming this feed won't be real-time. There's also a mini-documentary (RealPlayer required) summarising the various milestones of the galileo mission, which is actually pretty good (if a little imperialistic).

Update: I found some video simulations (computer rendered, of course) of the craft's approach to Jupiter as seen from different perspectives, which make for some interesting viewing (especially the first-person one). The software is behind these renders seems pretty powerful.