Although not as mouse friendly as PowerPoint, I've seen some beautiful, math heavy, presentations created with LaTeX and then displayed as pdf files in Acrobat's full-screen mode. (As someone else noted, be sure to embed the Type1 fonts into the pdf files when you create them --- I use dvipdfm, but ps2pdf probably also works. You could also use pdftex.)
Also, I think that some of these beautiful presentations have used ConTeXt (which is another macro package for TeX, with some literature about it available here: http://www.pragma-ade.com/pragma-ade/publish.htm)
If mouse friendlyness is most important, then try the PowerPoint-esque apps within either StarOffice (free) or Wordperfect Suite (not free). I bet that they wouldn't do math quite as nicely as anything TeX-like. Good luck!
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Although not as mouse friendly as PowerPoint, I've seen some beautiful, math heavy, presentations created with LaTeX and then displayed as pdf files in Acrobat's full-screen mode. (As someone else noted, be sure to embed the Type1 fonts into the pdf files when you create them --- I use dvipdfm, but ps2pdf probably also works. You could also use pdftex.)
Also, I think that some of these beautiful presentations have used ConTeXt (which is another macro package for TeX, with some literature about it available here: http://www.pragma-ade.com/pragma-ade/publish.htm)
If mouse friendlyness is most important, then try the PowerPoint-esque apps within either StarOffice (free) or Wordperfect Suite (not free). I bet that they wouldn't do math quite as nicely as anything TeX-like. Good luck!