It's a bird! It's a plane! It's a superhero movie!

Hollywood seems to be generating superhero movies at an alarming rate nowadays. Opening this Friday is "Captain America: The Winter Soldier," the latest Marvel concoction to bring a tried-in-tights super-dude to the big screen.

While that film is getting solid reviews for its spy-thriller plot and special effects, it bears recalling that for every superhero movie worth spending a few bucks to see there are plenty of would-be blockbusters that are best forgotten.

Here's our list of four of the best and four of the worst superhero movies.