My all-time favorite hero. I might still have a pic around when I dressed as him for Halloween when I was a kid.

I know he may not be the most powerful hero around but that's something I think that attracts me to the character. Also how he has to juggle his social life with his responsibility of being Spiderman.
Having said that, there are some other heroes that are also favorites of mine....
Daredevil- One of the most unique, imo, heroes around. A blind superhero. Also love the fact that he doesn't have real superpowers besides his other senses being superhuman. Similar to Batman, he worked his body into peak physical shape and is a deadly fighter. Something else that's really cool is how he uses his city as a playground and how he traverses it.
Ghost Rider- This character has such a cool, unique look. He rides a motorcycle made with fire, bad-ass!
Iron Man- Similar to Batman, a self made hero. I love Iron Man's armor, one of the most recognizable outfits around. I also dig the fact Tony Stark's a bit of a drunk, lol!
Silver Surfer- One of the most powerful heroes around. As strong as the Hulk, has the power to destroy a planet, can travel through space, into black holes. And his surfboard is pretty much indestructible.