True...but it's not a must to see every last one. Hell I still need to see wrestlemania 19 and 20 but too lazy to watch it.
19 and 20 are pretty good. You should watch those.
From 19: HBK/Jericho, McMahon/Hogan, Brock/Angle, Booker/HHH are definitely worth watching. Rock/Austin is fine but I find it hard to watch because Austin looks like he's in a lot of pain during the whole thing.
From 20: Christian/Jericho, Evolution vs Rock n Sock, Eddie vs Angle, and the triple threat.