I was watching the match between Azarenka and Sharapova, and I couldn't help but laughing. Sharapova has quite the "effort-grunt" herself, but Azarenka takes it to the next level with that warbling bird wail. Between the two of them, it was quite a symphony. In all seriousness though, it was a great match, and I thought for sure Maria was going to pull through. Great effort, and hopefully we'll get 'er next time.
P.S., here's an article some guy wrote about the grunting at the Azarenka/Sharapova match. It's pretty funny, but I'd say it rates out at about a PG-13, so no kiddies ;)
http://www.sebastianbraff.com/2012/09/dear-united-states-tennis-association.html