Hehehe, saw that too as I was researching zombie84's Media review thread. A guess is that in addition to Hamill introducing segments maybe there was the idea to include segments of the Making Of special.

here's the aftermath thread with explanation of the extra minutes:

http://groups.google.com/group/net.movies.sw/browse_frm/thread/e524b3acb522c4bc/34593f4be7f4fbe5?lnk=gst&q=cbs#34593f4be7f4fbe5

think the CBS showing was fully intact, however, I found all the
little speeches by CBS "personalities" about their reactions and
memories of Star Wars rather annoying and distracting. I mean, who
cares what Kate Jackson or Valerie Bertinelli thought about the movie,
or about anything at all, for that matter?