Football

And you thought British fans were dedicated:

Two World Cup fans from Uzbekistan cycled 4,000 miles across Europe to get an autograph from German goalie Oliver Kahn.
Akram Marufshonow and Musadshon Chornidow left Tashkent in March to meet their idol.
Kahn heard about their 4,000-mile journey through a German journalist who was covering their trip and agreed to meet the pair in Berlin.
When the three came face to face both Marufshonow and Chornidow burst into tears and hugged the German star while repeating in Russian: "Mr. Kahn you do not know what an honour this is for us."
The goalie gave them both an autograph and said: "I just can't believe this. It's amazing."

Saying that, if I could afford it I would go to every Man United match possible.