Yes, I love the passion he brings. Players who throw rackets, argue, yell, etc. don't really bother me. In fact, I kinda like it.
I'm not a fan of Marat Safin but his antics on court are quite amusing to me (it's his constant crybaby whining in interviews and bad sportsmanship on court that turns me off most).
The only time I don't like it when Andy gets mad is when he has a meltdown, which is different. When he melts down, his game is shot. Like what happened at Scottsdale earlier this year, and his other famous meltdown occurred at 2001 USO QF with Hewitt. Wasn't pretty.