
If they'd played the tune and invited him on to do something else. Fine.
If they'd announced before hand he was coming on and he played the tune. Fine.
But coming on and just doing it is the same as dancing to your songs at a club. It's just not done.
( , Mon 28 Jun 2010, 16:54, Reply)

It wouldn't have made much sense for him to come on and do anything else. It just seems like they thought it would be a fun thing to do and a nice surprise for the audience.
However, it would have been good if he had come on and revealed loads of final episode spoilers for people who were planning on watching it when they got home.
( , Mon 28 Jun 2010, 18:50, Reply)