Now I want a Mac

So I'm working on the slide show for my grandma's memorial, a good friend who does sound and A/V stuff for a living is helping me put it together. We were doing it today and he was using a program on his Mac, I think it was iMovie, anyway it was amazing! And so much fun and looks like you can do so many things with it. I'm not getting a Mac, but I totally want this program. Why can't PCs do this too???
ps: I'll post the show after the memorial, I don't want any one to see it before then...