The Twins crowd is bipolar

Matt Capps comes in... BOOOOOOO
Minnesota Nice overwhelms.... YAAAAAAAY
Matt Capps gives up a homer to BJ Upton.... BOOOOOOOO
Line out to center .... .YAAAAAAAY
Ball...... BOOOOOOOO
Strike.....YAAAAAAAY
Ball....BOOOOO
Capps removed.... YAAAAAAY

So, the moral: The fans hate Capps, but really try to be polite.