I went to quite a few Cosmos and Dips games...I recall one where Pele and Cruyff played, but I have no idea what year that was. Will check said docu out.
The new league is a bit of a different animal, though the Beckham circus does threaten to change that, for better or for worse.
Lots of other international superstars are in the rumour mill for the MLS this year...and a few have already come here, including a couple of huge Mexican players (Juan Pablo Angel just came from the English Premier League and Cuahtemoc Blanco just left Club America to come play in the U.S.)...which I'm sure will inspire the usual litany of hateful, racist, vile crap from the resident crab, but so it goes.
You should check out "Once in a Lifetime: The Story of the NY Cosmos". It is a documentary that came out last year. My parents went on one of their first dates there, and my dad (not a huge sports fan and definitely not sentimental) saved the ticket stub I guess through a combination of the date and the huge deal the Cosmos were at the time.
Shep Messing said something that he was the luckiest guy ever, that there were hundreds of guys in the US who were just as good goalies as he was, but he was just in the right place at the right time, playing in the floundering league in some dump in NY making no money, and then along came Pele and the others and he just went along for the ride