SEASON PREMIERE: This series has been around so long that this is the start of competing cycle number 29. That’s a lot of races, amazing or not. But on TV, familiarity, in some cases, breeds not contempt, but indifference. I used to enjoy this show, and watch it faithfully, but a few years ago it just started feeling stale, and much too repetitive. Tonight, this newest edition of Amazing Race shakes things up a bit. Instead of casting duos of friends, lovers, married couples, relativ