I have a soft spot for travel shows that offer a twist on the now ubiquitous genre, such as the snarkiness of Travel Channel's Anthony Bourdain's No Reservations . But it's rare that any of these actually make me howl with laughter. Which is very much the case with Science Channel's new travelogue An Idiot Abroad , which launches on Saturday evening here in the States after a successful run on Sky1 in the UK. This is one show that manages to successfully fuse together pretty pictures of exotic locales, staggeringly hilarious humor, and a round-headed chap with a host of xenophobic issues. Yes, it stars Karl Pilkington. If you're unfamiliar with the premise, An Idiot Abroad recounts the globe-spanning journeys of The Ricky Gervais Show breakout Karl Pilkington, here sent around the world to the locations containing the Seven Wonders of the World by close friends Ricky Gervais and Stephen Merchant, who executive produce this series and apear on-screen (and on the ph