The Undertaker went 21-0 before Brock handed him his first loss at Wrestlemania XXX. Every single Wrestlemania—every single meaningful PPV, for that matter—is available on the WWE Network. That means that you can watch the entire streak, starting with Jimmy Snuka and ending with C.M. Punk.

It’s a fascinating look at how a single character changed—from old West mortician, to supernatural zombie, to Satanic worshipper, to biker, to Phenom—as a response to the changing world around him. What was awesome back in the early '90s seems quaint today. And of course, “vs. Shawn” at Wrestlemania 25, and “vs. HHH” at Wrestlemania 28 are two of the most heart stopping matches ever performed on the grandest stage of them all.