Not a big fan of A Chorus Line Revival's Opening of I Hope I get It...it goes a little slow i think, imo. I did not see the original production, but judging by the cast recording of the original A Chorus Line's I Hope It Get It, it seems to be better.
Best opening i would have to say is probably between Wicked and Phantom of the Opera.
Also, NOT to say this is the best/worst opening, but if you have heard the Jersey Boys opening(Ces Soirees La) it throws you off a little bit, as to what type of a show you are going to be seeing, but the song is good after the first time of seeing the show.
Come on babe we're gonna paint the town...and all that jazz...