By now, we've all seen the watermelon-to-the-face viral video making the rounds the last few weeks, but the season opener of CBS' The Amazing Race is far more than just than cringe-inducing moment of pain. In fact, the opener to the seventeenth (!!!) season of The Amazing Race ("They Don't Call It the Amazing Race for Nothin'!") might just go down as one of the series' all-time bests, sending the contestants across the pond to England, where they're forced to contend with scaling the walls of a castle, learning the definition of "battlements," discovering what Stonehenge is, and performing a rather difficult balancing act. That is, when they're not getting hopelessly lost driving on the left side of the road, as happens to more than just one hopeful team. As with all great seasons, the success or failure of an individual reality competition cycle rests pretty squarely on the casting and I have to say that they've more than come thro