They mess me up often (forgetting them usually... lol
I have had the same issue all semester in my visual basic classes, especially when writing up an array. I'll forget the parentheses and wonder for a while why my array isn't working and you don't get an error message from that sort of thing... it just doesn't load the array. Eventually I find this is my most common mistake and about the only one I've made after I got the basics of VB down in my head.
@12padams: I'm gonna have to sit down and watch the series once finals are over... looking forward to it!