For example http://www.hulu.com/watch/669971 (us connection needed) with fanboy's ultimate list makes you wait 30s of black screen and then if you haven't watched a hulu ad in awhile, it requires another black screen (15s-90s) wait due to blocked ads. If the ads were allowed it would play a 5-30s ad and then go to the video. I prefer the latter only because it gets you to the video sooner, what do others think?
IIRC it used to allow the ad and then was blocked with the same runtime about a year ago which was fine, black over ad of the same runtime I'd prefer as well but now hulu is playing other games with adblockers.