Iron Man was just not very magnetic to me

Took the kids to see Iron Man tonight with our cousins Jeri and Danny.  I generally like Robert Downey, Jr and he acted very hard in this movie. However, I just didn't get the story. I remember watching Iron Man cartoons when I was little and reading the comic books, there was some special thing about Iron Man's blood the way I remember it that gave him super hero powers.

In the movie incarnation, Tony Starks is the son of a weapons designer and a brilliant weapons designer himself.  However, he has some serious character flaws. He is kidnapped by some sort of mid-eastern terrorists and take some shrapnel in his chest.  A doctor attaches an electromagnet to a car battery on his chest to keep the shrapnel from going into his heart. Downey then designs some sort of mini-power source to power the electromagnet,  He uses the power source to power a metal suit he builds (long story) and escapes from the terrorists.  From there the movie is fairly predictable and frankly in my opinion not very good.  I didn't understand how he got the superpower, it was just a powered suit and how it worked was pretty silly. 

The ultimate thumbs up or down for me was that both of my sons fell asleep in the movie theater.  The good news is that this is the start of the summer movie season. I am really looking forward to Indiana Jones and the kids want to see Speed Racer!