We've sung the praises of Gianna Michaels many times before. But for those of you who weren't listening—or who need a little extra stimulation to really get the message— this video of Gianna showing off her skills should get the point across. After all, it's not every girl who can deepthroat like that (and if you know of any others, please feel free to introduce us). Is it any wonder why we think she's so special? . . . · Gianna Mich...