Most Steve Irwin fans found it simply hilarious that Steve could wrestle crocs, get unbearably close to cougars and bears, and handle venomous snakes, but he squirms like a little girl when a harmless spider crawls towards him.
British comedian Phill Jupitus is terrified of spiders — and irate about people who aren't afraid of spiders and use this fact to torment him.
Filmmaker Lars von Trier rarely moves far from the border of his native Denmark, and has never left Europe due to an intense fear of flying. He even turned down an offer to direct for Steven Spielberg due to this.
Stanley Kubrick also had a fear of flying, and as a result, spent the last 40 years of his life in England.
Former soccer player and now sports coach Marcelo "Bichi" Borghi is also infamous by his fear of planes. The very few times he doesn't travel by bus/train/car with his teams, he has to be sedated to the point of almost passing out when on the plane.
Another soccer example, former Inter Milan and Arsenal striker Dennis Bergkamp; who refused to go to the 2002 World Cup (in South Korea and Japan), because it would require him to fly. He traveled by boat for international/European matches.
Legendary American Football announcer John Madden was famous for his aviophobia. This gave him his iconic trademark - the Madden Bus.
General of the Air Force Henry "Hap" Arnold was one of the first military aviators, and would eventually rise through the ranks to become the first (and only - the 5-star ranks were discontinued after World War II) General of the Air Force. He was also afraid of flying, due to being one of the first military aviators to be in a plane crash.
Hitchcock also had a lifelong fear of policemen (dating from a childhood Scare 'Em Straight incident), which is why so many of his protagonists end up wrongly accused.
Interestingly, Joey from Full House mentions eggs as one of the things people tend to fear.
In a magazine from years ago, Hilary Duff stating her fear (or strong disgust) of eggs.
Stephen King is afraid of the number 13, a condition known as triskaidekaphobia.
Composer Arnold Schönberg similarly was afraid of the number. His greatest fear was reportedly dying on an age whose digits added up or multiplied to 13. Which he did, at age 76 (7+6=13) on Friday the 13th - perhaps because he feared it that much.
French composer Jules Massenet shared their fear as well. Made weirder and arguably funnier by how the letters in his name are... thirteen.
Pamela Anderson probably has the above beaten. She is reportedly a sufferer of eisoptrophobia — in other words, she is freaked out by her own reflection.