Rutherford's Gold Foil Experiment and other Shockwave Interactives
"This animation recreates Rutherford's gold foil experiment, which led to the discovery of the atomic nucleus." Another with narration is at www.mhhe.com/physsci/chemistry/essentialchemistry/flash/ruther14.swf.
The link address is: http://www.wwnorton.com/college/chemistry/chemistry3/ch/02/chemtours.aspx