Actually, CBS snipped one tiny little thing. Vader's gesturing at Tarkin as if he was speaking, right before Tarkin's line "Terminate her! Immediately!"

That could be considered the first fan edit. ;)

Sadly, no Biggs or Jabba scenes added back in. The footage of a family whose devotion to SW merchandise had taken over their entire house was unique to the broadcast, IIRC. The rest were the celebrity "testimonials" (mostly people with shows on CBS at the time) and bits from the documentaries. Commercials made up the rest of the three hour timeslot.

In spite of the hype, SW had been shown so many times on Cable and pay per view at this point, it was beaten in the ratings by the trashy miniseries "Lace". I still watched the whole thing though.