Sebastian Vettel
As of July 2014, Sebastian Vettel is the current Formula One World Champion driver, having won the championship 4 years in a row: in 2010, 2011, 2012 and 2013.
The defending Formula One World Champion heading into the 2012 season is Sebastien Vettel of the Red Bull Racingchassis.
Big show is the world heavyweight champion
CM Punk is the WWE Champion
There was no World Cup in 2012.
Big Show is the current WWE World Heavyweight Champion as of December 2012. He defeated former world heavyweight champion, Sheamus, on the 28th October at Hell in a Cell
The 2012 and 2013 World Professional Snooker champion is Ronnie O'Sullivan.
Yes
Sheamus is the World Heavyweight Champion, CM Punk is WWE Champion, Santino Marella is the United States Champion, Big Show is the Intercontinental Champion
John Higgins is the current World Snooker champion in May 2011. February 2012 it is John Higgins.
The cast of Racing Legends - 2012 includes: Ken Block as himself Enzo Ferrari as himself Nicky Grist as Himself - Co-Driver Mike Hawthorn as himself Robbie Head as Himself - Childhood Friend Damon Hill as Himself - 1996 F1 World Champion Jake Humphrey as Himself - F1 Presenter David Lapworth as Himself - Subaru Team Technical Director Alison McRae as herself Jimmy McRae as Himself - 5 x British Rally Champion Stirling Moss as Himself - Racing Legend Tiff Needell as himself Doug Nye as Himself - Motor Racing Historian Val Pirie as Herself - PA to Sir Stirling Moss Derek Ringer as Himself - Co-Driver Carlos Sainz as Himself - Double World Rally Champion Bernie Shrosbree as Himself - High Performance Coach Patrick Stewart as Himself - Presenter Greg Strange as Himself - Editor iRally Tony Vandervell as himself Murray Walker as Himself - Commentating Legend Tommy Wisdom as Himself - Daily Herald Motoring Correspondent
Probably Sebastian Vettel