Among other things, this will let you:
Embed swf and flv files in only three lines of code.
Get the height and with of flv video’s in Flash.
… and there was going to be a third thing. The list doesn’t really look right with two things. I’m tired at ****. Anyway, check it out. You can have an flv movie on your webpage in just three lines - its not getting easier than that till HTML 5.0.