Of the above list, I'm torn between Live at the Filmore and Woodstock. Both were monumental and hugely influential. Obviously Woodstock was an influential event but the album was a big success as was the movie (in its day).

Monterey Pops was also very influential as an event (launched Jimi's career and introduced The Who to America) But Monterey Pops was not released as an album until several decades later, so the recordings as an album were not influential at the time.