When you open it, the stats animate in one by one, as many as 6 boxes for 6 different stats, each box the numbers count up where the numbers animate like in /roll and play a little sound effect as long as the numbers are animating.

Annoyance #1 Bug
If you close the window with the X at the top right, or hit ESC before all the numbers and boxes have finished animating, the sound effect never goes away, it will play on and on.

Annoyance #2
There are 6 tabs, I don't know how many animate, but once you reach second or third tab, it becomes pretty annoying, the animation is I think unskipable, I tried right click, esc (see above). S key. Is there actually a way to skip the animation that I don't know about?

Annoyance #3
You have to close the Battle Report every time you load Dota, it's shoved in your face every single time Dota is launched.