Old Spice and Wieden + Kennedy are well aware that they have a serious megahit on their hands with Isaiah Mustafa, aka "The Man Your Man Could Smell Like." He's done the two main TV spots, as well as the mustache clip, and now, in a truly fantastic addition to the campaign, he's doing a slew of personalized videos in which he thanks individual people—bloggers, YouTube commenters, Twitterers, celebrities—who've complimented his ads online. Check out his message to Apolo Ohno below, and see a crazy 18 more videos after the jump. The writing is all great, and the work takes the concept of a brand joining the conversation online to wonderful new levels. The only downside, of course, is that he hasn't done a video for us yet. UPDATE: Actually, he has given us a shout-out, too. Also, these first 19 videos were just the beginning. There must be more than 100 on Old Spice's YouTube channel by now.