I know this is no easy task. And I'm a programmer, not a web developer, so I know even less than most people.
Here's what I've been able to (I think correctly) figure out:
The ads are provided via IGN (for example, there are ads.ign.com/fod/toyota/toyta88x31.html element). These are the video ads, because blocking them makes the "ad" count-down sit at 00 seconds remaining, and never move past. Creating an exception for the "ads." filter by excepting "ads.*/fod/*" the ads play correctly without creating an add to the right of the video player (those seem to be coming from doubleclick)
So I went ahead and installed the web developer toolbar, to try and look at some of the elements. And interestingly enough, there's a "div #mn_player 7" tag when I turn on "Display Div Order". There's also a "div #flash_ad_player 29". I think that's referring to the order in which elements appear - which makes sense - the flash ad element is at the bottom of the screen, right where the progress bar gets "Covered up" by the "Video will resume in xx seconds" during the add playing.
There's also, stacked off to the left, a #flash_ad_player that's different than the #mn_player_QMP that looks like the main video screen. But when I search for "blockable items", #flash_ad_player doesn't appear. Am I barking up the wrong tree? Am I close?
I'd appreciate any thoughts - thanks!