10 Most Embarrassing WWE Raw Moments That Happened LIVE

4. Jeremy Piven Forgets What SummerSlam Is Called (Aug 3, 2009)

That nonsense involving The Ball Family felt like a throwback to those painful Raw 'Guest Hosts' of yesteryear. One of the worst was Entourage star Jeremy Piven, who appeared alongside Dr. Ken shortly before SummerSlam 2009 to promote the duo's new 'The Goods: Live Hard, Sell Hard' movie.

Completely unaware what was going on, Piven was clearly not clued in on WWE's product and warned The Miz he'd be banned "from the summer fest" should he lose to John Cena in a Lumberjack Match. Cena quickly stepped in and helped the actor out, correctly calling WWE's upcoming pay-per-view SummerSlam. Ouch.

This was just another example of why those guest stars sucked. At the very least, they had to know what they were talking about, otherwise fans would just turn on them and jeer.

As for Piven, he needed to do a bit more research before taking the gig.