Running onto the field is a terrible idea if you're a fan, but if you must do so at least get your money's worth like this guy.
Videos by FanBuzz
A fan at the Cardinals game decided he would hop onto the field and he was able to elude all of the security guards to get to home plate where he did a somersault.
First, the Cardinals really need to get better security, because these guys are pretty awful. He gets past the first line of defense and into the outfield and they let him get all the way to home plate. The one guy comes in, takes an awful angle in pursuit and then misses the diving tackle. That's just not gonna cut it.
Now, as for the guy that ran on the field, you have to like his elusiveness and lateral quickness to avoid the tackle. Also, his somersault form is pretty much perfect. Not sure it's worth it to get arrested, but to each his own.