For all the anims on the WaveGuide website, I used MainActor Broadcast (see link below). The standard version of this (MainActor) is available from Aminet I believe. It's excellent but not as versatile. MainActor will create anims in several formats and can run files of any length very quickly. I made a 70mb LightWave animation which runs great through MA. Another interesting system is ClariSSA, which uses the frames split into two interlacing components. Each half is displayed rapidly in succession to give a super smooth animation (SSA). I tried PowerMovie but try as I may, it never worked for me. It would play the demo anim supplied with the package, but my own stuff just wouldn't run at all. I believe it was written by one of the Power Computing people. I don't think it really got further than the beta stage.
JaX