When Edge won the WWE Title at New Years Revolution 2006. That was probably my first BIG mark out moment, watching it live with my brother at the time, it was like 4am because PPV's are shown much later in the UK, we were annoyed that super Cena overcame the odds again in that brutal Elimination Chamber match, but when Vince came out and announced Edge was cashing in, we were just going crazy, awesome moment. One of my most favorite moments in wrestling history:
Undertaker vs Kurt Angle at No Way Out 2006. Very underrated match, it was intense. I was watching it at 4AM and I was pretty much at the edge of my bed, squealing at every near fall. I liked both Angle and Taker so that was a very good match for me.
First mark out moment: No Mercy 2000 Jericho putting X-Pac in the Walls on top of the cage.
Second mark out moment: Moments later Jericho dropkicking the cage to send X-Pac hurtling down below to land with his crotch on the cage door.
There were probably other times before this that I marked out but this is the one I most clearly remember. I was a massive Rocky mark and I literally leapt out of my chair and punched the air when he said he was finally back in the WWF. I was only 8 at the time though, but watching this again makes me appreciate JR on commentary more!