I was there too. I was able to watch most of the show from the fifth row, and it was a treat to see five guys that are really loose and good at what they do. I've never seen Chris or Matt live before (I've heard mixed reviews of Chris; last night he was really strong, and Matt was a beast. He hits SO hard.) and I haven't seen Mike, Jeff and Stone since I think 2004 (the Hartford show where the police went nuts with the tear gas on the lawn).
It was a really good, well-played set. Chris talked a lot more than I would have expected, but I think that was in part to let the guys get set between songs, because Mike, Jeff, and Stone literally changed guitars after EVERY song.
The MSG sound was excellent (it was for Sabbath a couple weeks ago as well) and it really had the vibe of five guys at a party jamming for their friends, except that they were tight as SHIT. I mean, REALLY tight. Achilles Last Stand was mind-blowing; Matt nailed every one of those rat-a-tat drum fills at the end, and Chris did Plant better than Plant could today (and I'm a big fan of Robert). Before the song, he said "here's a song that has been played once or twice in this building" (Zep was known for their multi-night stands in NYC, and have played some legendary shows at MSG), and when it was done Chris came to the front of the stage and said something like "If you told me, I'd be with my good friends, playing THAT song at MSG...". A surprising song was "Jump Into The Fire" by Nilsson; it really rocked. The MLB songs were really, really good; it was a pleasure to hear those songs live.
I feel lucky to have seen that show. The only downside was the crowd; after seeing Marillion on Sunday this crowd was WAYYYYYYY too hip for me. I was going to scalp, and they dumped a couple floor seats at the last minute, and the guy that bought in front of me... he had the whole uniform: man-bag, Doc Martens, bandanna's around the waist and around the neck, the billowy shirt open to the waist, the headband, rings on all the fingers, a thousand bracelets, long black hair...but as I was standing behind him I noticed what looked like lice eggs in his hair. I went to my seat and he was right there and I refused to go there. So I was that guy, walking around the floor the entire show, until I got in with a couple who let me stand with them.