“Oh my gosh! I didn’t know my BlackBerry could do that…”

I am going to go out on a limb and assume that the majority of BlackBerry users would consider email to be the BlackBerry’s killer feature. Besides email, however, what excites you about your BlackBerry like whatever American Idol contestant, Katherine McPhee, has discovered about her 8700 that has her busting at the seams with excitement.