Prezi is awesome for some sorts of presentations, even if just to be different from ppt / keynote for a while. It's got really simple primitives, which forces you to deliver a pretty clean presentation.<p>Recently it has been used at NYU poly in their reverse engineering classes:
<a href="http://prezi.com/a5tm-lf0879-/reverse-engineering-101-nyupoly-2010/" rel="nofollow">http://prezi.com/a5tm-lf0879-/reverse-engineering-101-nyupol...</a>
<a href="http://prezi.com/e5a2tumdqocj/reverse-engineering-102-nyupoly-2010/" rel="nofollow">http://prezi.com/e5a2tumdqocj/reverse-engineering-102-nyupol...</a><p>and has been used by the immunitysec guys quite a bit too:
<a href="http://prezi.com/kmyvgiobsl1d/pyretic-rich-smith-blackhatdefcon-2010/" rel="nofollow">http://prezi.com/kmyvgiobsl1d/pyretic-rich-smith-blackhatdef...</a><p>This year i used it to demo a timeline of memory corruption bugs over the ages too:
<a href="http://prezi.com/iemlmzvpnk_d/the-almost-complete-history-of-memory-corruption-attacks/" rel="nofollow">http://prezi.com/iemlmzvpnk_d/the-almost-complete-history-of...</a><p>It rocks..