Sunday night, World Wrestling Entertainment presents its annual springtime spectacular WrestleMania. As has been the case for 30 years, fans from over 100 countries will watch as the top stars in professional wrestling deliver moments and matches that will be forever immortalized in video packages and highlight reels for generations to come. Simply put, WrestleMania is about delivering crowd-pleasing moments that stand the test of time and this year will be no different. Inside the Mercedes Superdome in New Orleans, the sport's legendary figures will combine with the stars of today to create moments that will make even the most cynical fan mark out in joy and excitement. Whether it is the return of "Stone Cold" Steve Austin to the grandest stage in wrestling, an unexpected and unscheduled appearance from former WWE champion CM Punk or the first-ever appearance by Sting on a WWE broadcast, there will be plenty of opportunities for fans to pop, either inside the dome or sitting at home. With anticipation at a fever pitch just hours from Sunday's broadcast, gear up for the Showcase of the Immortals by taking a look at a few things that will make your inner wrestling nerd mark out.