Any radio ad with a siren in the background. I hate that. Very distracting while driving. Mandatory check to rear view mirror. If you're not getting busted(whew), takes some time to determine where that noise is coming from. FCC ought to ban them. Sireens are'nt speech, so I've got no issues with that. It's a safety\distraction issue, especially in heavy traffic. More people are distracted and there is more shit on the road to deal with. Did I mention I hate them? A lot?