Okay, okay! I have to admit I thought he WAS pretty funny in that "National Lampoon Vacation" series.
My favorite scene is in the first of that series, when once again in a similar irked moment, he get's this insane look in his eyes and tells his family(BTW, isn't Beverly DeAngelo's overbite HOT, or is it just me?) who all say that maybe they should just turn back and go home..."This is no longer JUST a vacation! This has NOW become a QUEST!"