The MyMac.com Podcast is celebrating its 100th podcast by recording a live show at the Apple Store in Grand Rapids, Michigan. Guy Serle flies in from Virginia to co-host the show with Tim Robertson, and they gave away over US$1,750 worth of Macintosh and iPod gear. Also, what does it mean to be a Mac user? Find out what some of our past podcast guests and MyMac.com writers think it means on this show.