I saw a comment in yesterday's trade thread here asking what would happen if Derrek Lee were to hit a home run this weekend. Here's what I believe the reception will be. This is based partly upon my own experience and also upon what I remember about fan favorites changing teams.
-Batting practice: Lee will likely get a very loud reception from the Cubs fans inside Wrigley Field, and if he does indeed launch any home runs during BP, the fans in the outfield bleachers will scramble for them probably more than any other members of the Atlanta roster.
-First at-bat: Lee will likely receive an ovation, maybe even a standing ovation from the Cubs fans, in recognition of his years of playing first for the Cubs. He single-handedly carried the team in 2005, and many Cubs fans still like him despite the trade.
-Close plays at first: My guess is that the fans will applaud close plays, especially athletic ones, because Lee made numerous plays such as digging poorly-thrown relay throws out of the dirt or diving to his left or right to rob opposing batters of base hits.
-Home runs: I get the feeling any home run balls Lee hit will be thrown back. I'm basing this upon my experience sitting in the bleachers for a Sunday Night Cubs-Phillies game, and the fans threw back the Phillies' home run balls that night. This included a young boy who caught what I am guessing was his first home run, and the fans in that area were yelling at him to throw it back.
If you have any further questions about the possible reception Lee will likely receive, ask in the comments and I'll try to answer them as well as I can.
P.S.: There's a fire station across the street from Wrigley Field, just in case the Braves' broadcast booth catches fire.