OK, this one struck me as a bit odd. I review my shots in the "info"/zoomed out mode with the histogram and all the details. Typically when looking at images in that mode, you press the zoom in button and it zooms in. Do this when a video is on the screen and it'll tell you it "cannot magnify"... But if you press the info button, sure enough it cycles through the modes and gets to a "full screen" video mode. No, it won't magnify video, but it seems like an obvious firmware glitch to me in that they assume you're trying to zoom with the zoom button when in reality form that zoomed out screen that button also changes to the standard view....
yeah, I know it's video for the first time in a canon, and I know it's going to have some teething problems, but it'd be nice if they gave us some firmware updates to fix these stupid issues (the lack of controls being another where people have walk arounds).
just figured I'd mention this in case anyone else is trying to replay their videos filling the rear screen and can't. 
