It seems to do exactly what it says with consummate ease - as long as you only pick a Quicktime movie folder it will quickly display thumbnails (of up to 100 apparently) movies per page, and you just put the cursor in a thumbnail of a movie and it plays instantly. Impressed.

It goes ballistic if you try select any format other than mpeg, and hangs and gobbles up way too much processor and has to be force quit. If it could just ignore non mpegs without this behaviour, great, and if it could display .avis and so on, that would be really cool.