I've wondered about this for years...
On the 2001 DVD, at the beginning of AYWI, immediately following the acapella intro, Neal looks at Ross, then Jon looks at Deen who then looks at Ross and all of them have a look of both surprise and laughter on their faces. The strange thing about it is this little inside event was purposely included in the edit as was the 4 different camera angles of what I described. It's almost like the guys all had some sort of bet and since Stevie seems to be oblivious to what's going on, the bet was at his expense.
It's totally unimportant and I've never lost any sleep over it. I'm just curious if anyone else has ever caught this and/or knows the scoop about it.
Take a look and you'll see what I'm rambling on about.
http://www.youtube.com/watch?v=P-85ymiDTNQ