Iron Man was fantastic. They did a good job of keeping the pace moving without any really downtime. Stan Lee must be laughing his way to the bank with all these Marvel movies. Anyways, Robert Downey Jr. carries this film entirely. I really feel Downey was born for this part especially since Stark's personal life later in the comic series is similar to Downey's. Go see this movie and don't make the mistake to leave when the credits start rolling...wait till the end for a nice treat.